You are an assistant tasked with analyzing measurement histories to predict the patient's next laboratory or vital sign value.
<PatientData>
Demographics: {'race': 'White', 'gender': 'MALE', 'year of birth': 1958}
Prior Diagnosis 1: {'condition': 'Prediabetes', 'condition status': 'Not Extracted', 'start date': '1979-01-18', 'end date': None}
Last Urea Nitrogen measurement on 2015-07-01 00:00:00: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mg/dL', 'value': 19.0}
Prior measurements of the same type 1: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mg/dL', 'value': 8.0}
Prior measurements of the same type 2: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mg/dL', 'value': 19.0}
Prior measurements of the same type 3: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mg/dL', 'value': 17.0}
Prior measurements of the same type 4: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mg/dL', 'value': 12.0}
Prior measurements of the same type 5: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mg/dL', 'value': 19.0}
Prior measurements of different types 1: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': '%', 'value': 5.9}
Prior measurements of different types 2: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'cm', 'value': 175.77}
Prior measurements of different types 3: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'kg', 'value': 111.08}
Prior measurements of different types 4: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'kg/m2', 'value': 35.96}
Prior measurements of different types 5: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mmHg', 'value': 116.0}
Prior measurements of different types 6: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mmHg', 'value': 75.0}
Prior measurements of different types 7: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': '%', 'value': 5.9}
Prior measurements of different types 8: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mg/dL', 'value': 92.0}
Prior measurements of different types 9: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 10: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mg/dL', 'value': 9.09}
Prior measurements of different types 11: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mmol/L', 'value': 140.0}
Prior measurements of different types 12: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mmol/L', 'value': 4.61}
Prior measurements of different types 13: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mmol/L', 'value': 110.0}
Prior measurements of different types 14: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mmol/L', 'value': 28.0}
Prior measurements of different types 15: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mg/dL', 'value': 199.0}
Prior measurements of different types 16: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mg/dL', 'value': 102.0}
Prior measurements of different types 17: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mg/dL', 'value': 114.0}
Prior measurements of different types 18: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-26T00:00:00', 'unit': 'mg/dL', 'value': 64.0}
Prior measurements of different types 19: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': '%', 'value': 6.3}
Prior measurements of different types 20: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'cm', 'value': 175.77}
Prior measurements of different types 21: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'kg', 'value': 111.08}
Prior measurements of different types 22: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'kg/m2', 'value': 35.96}
Prior measurements of different types 23: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mmHg', 'value': 131.0}
Prior measurements of different types 24: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mmHg', 'value': 71.0}
Prior measurements of different types 25: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': '%', 'value': 6.3}
Prior measurements of different types 26: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mg/dL', 'value': 67.0}
Prior measurements of different types 27: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 28: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mg/dL', 'value': 9.49}
Prior measurements of different types 29: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mmol/L', 'value': 136.0}
Prior measurements of different types 30: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mmol/L', 'value': 4.65}
Prior measurements of different types 31: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mmol/L', 'value': 111.0}
Prior measurements of different types 32: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2012-05-01T00:00:00', 'unit': 'mmol/L', 'value': 20.0}
Prior measurements of different types 33: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': '%', 'value': 6.3}
Prior measurements of different types 34: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'cm', 'value': 175.77}
Prior measurements of different types 35: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'kg', 'value': 111.08}
Prior measurements of different types 36: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'kg/m2', 'value': 35.96}
Prior measurements of different types 37: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mmHg', 'value': 132.0}
Prior measurements of different types 38: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mmHg', 'value': 70.0}
Prior measurements of different types 39: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': '%', 'value': 6.3}
Prior measurements of different types 40: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mg/dL', 'value': 95.0}
Prior measurements of different types 41: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 42: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mg/dL', 'value': 8.51}
Prior measurements of different types 43: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mmol/L', 'value': 144.0}
Prior measurements of different types 44: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mmol/L', 'value': 3.7}
Prior measurements of different types 45: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mmol/L', 'value': 104.0}
Prior measurements of different types 46: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2013-05-28T00:00:00', 'unit': 'mmol/L', 'value': 20.0}
Prior measurements of different types 47: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': '%', 'value': 5.9}
Prior measurements of different types 48: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'cm', 'value': 175.77}
Prior measurements of different types 49: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'kg', 'value': 111.08}
Prior measurements of different types 50: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'kg/m2', 'value': 35.96}
Prior measurements of different types 51: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mmHg', 'value': 126.0}
Prior measurements of different types 52: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mmHg', 'value': 87.0}
Prior measurements of different types 53: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': '%', 'value': 5.9}
Prior measurements of different types 54: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mg/dL', 'value': 74.0}
Prior measurements of different types 55: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 56: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mg/dL', 'value': 9.85}
Prior measurements of different types 57: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mmol/L', 'value': 138.0}
Prior measurements of different types 58: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mmol/L', 'value': 4.79}
Prior measurements of different types 59: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mmol/L', 'value': 104.0}
Prior measurements of different types 60: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mmol/L', 'value': 23.0}
Prior measurements of different types 61: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mg/dL', 'value': 165.0}
Prior measurements of different types 62: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mg/dL', 'value': 148.0}
Prior measurements of different types 63: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mg/dL', 'value': 75.0}
Prior measurements of different types 64: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-05T00:00:00', 'unit': 'mg/dL', 'value': 60.0}
Prior measurements of different types 65: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': '%', 'value': 5.8}
Prior measurements of different types 66: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'cm', 'value': 175.77}
Prior measurements of different types 67: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'kg', 'value': 111.08}
Prior measurements of different types 68: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'kg/m2', 'value': 35.96}
Prior measurements of different types 69: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mmHg', 'value': 134.0}
Prior measurements of different types 70: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mmHg', 'value': 85.0}
Prior measurements of different types 71: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': '%', 'value': 5.8}
Prior measurements of different types 72: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mg/dL', 'value': 95.0}
Prior measurements of different types 73: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 74: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mg/dL', 'value': 10.14}
Prior measurements of different types 75: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mmol/L', 'value': 143.0}
Prior measurements of different types 76: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mmol/L', 'value': 4.47}
Prior measurements of different types 77: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mmol/L', 'value': 104.0}
Prior measurements of different types 78: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-01T00:00:00', 'unit': 'mmol/L', 'value': 26.0}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-02-26', 'end datetime': '2011-02-26'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-05-01', 'end datetime': '2012-05-01'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2013-05-28', 'end datetime': '2013-05-28'}
Visit 4: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2013-07-30', 'end datetime': '2013-07-30'}
Visit 5: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-06-05', 'end datetime': '2014-06-05'}
Visit 6: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-07-01', 'end datetime': '2015-07-01'}
Medication 1: {'Drug name': 'Penicillin V Potassium 500 MG', 'Start datetime': '2002-12-27', 'End datetime': '2002-12-27', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Procedure 1: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2012-05-01', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Colonoscopy', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2013-07-30', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 3: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2014-06-05', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 4: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2015-07-01', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
</PatientData>
Based on the trajectory above, what will the patient's **next** Urea Nitrogen value be on 2016-07-08 00:00:00?
A. 18.0
B. 14.0
C. 18.0
D. 19.0
E. 14.0
Please share a single capital letter representing your selected answer: 
18.0 14.0 18.0 19.0 14.0