You are an assistant tasked with analyzing measurement histories to predict the patient's next laboratory or vital sign value.
<PatientData>
Demographics: {'race': None, 'gender': 'MALE', 'year of birth': 1975}
Prior Diagnosis 1: {'condition': 'Prediabetes', 'condition status': 'Not Extracted', 'start date': '2003-12-11', 'end date': None}
Prior Diagnosis 2: {'condition': 'Laceration of thigh', 'condition status': 'Not Extracted', 'start date': '2013-08-03', 'end date': '2013-08-23'}
Last Urea Nitrogen measurement on 2011-11-26 00:00:00: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mg/dL', 'value': 7.0}
Prior measurements of the same type 1: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mg/dL', 'value': 7.0}
Prior measurements of different types 1: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': '%', 'value': 6.0}
Prior measurements of different types 2: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'cm', 'value': 167.39}
Prior measurements of different types 3: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'kg', 'value': 91.02}
Prior measurements of different types 4: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'kg/m2', 'value': 32.48}
Prior measurements of different types 5: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mmHg', 'value': 132.0}
Prior measurements of different types 6: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mmHg', 'value': 85.0}
Prior measurements of different types 7: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': '%', 'value': 6.0}
Prior measurements of different types 8: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mg/dL', 'value': 99.0}
Prior measurements of different types 9: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 10: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mg/dL', 'value': 9.94}
Prior measurements of different types 11: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mmol/L', 'value': 138.0}
Prior measurements of different types 12: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mmol/L', 'value': 4.76}
Prior measurements of different types 13: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mmol/L', 'value': 105.0}
Prior measurements of different types 14: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mmol/L', 'value': 23.0}
Prior measurements of different types 15: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mg/dL', 'value': 164.0}
Prior measurements of different types 16: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mg/dL', 'value': 126.0}
Prior measurements of different types 17: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mg/dL', 'value': 61.0}
Prior measurements of different types 18: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-26T00:00:00', 'unit': 'mg/dL', 'value': 77.0}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-11-26', 'end datetime': '2011-11-26'}
Visit 2: {'visit': 'Emergency Room Visit', 'visit type': 'EHR encounter record', 'start datetime': '2013-08-03', 'end datetime': '2013-08-03'}
Medication 1: {'Drug name': 'Naproxen sodium 220 MG Oral Tablet', 'Start datetime': '2013-08-03', 'End datetime': '2013-08-23', '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': '2011-11-26', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Suture open wound', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2013-08-03', '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 2014-07-07 00:00:00?
A. 8.0
B. 19.0
C. 14.0
D. 9.0
E. 10.0
Please share a single capital letter representing your selected answer: 
8.0 19.0 14.0 9.0 10.0