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': 1969}
Prior Diagnosis 1: {'condition': 'Prediabetes', 'condition status': 'Not Extracted', 'start date': '2010-03-27', 'end date': None}
Prior Diagnosis 2: {'condition': 'Acute bronchitis (disorder)', 'condition status': 'Not Extracted', 'start date': '2014-06-07', 'end date': '2014-06-26'}
Prior Diagnosis 3: {'condition': 'Concussion with no loss of consciousness', 'condition status': 'Not Extracted', 'start date': '2014-10-05', 'end date': '2014-12-29'}
Prior Diagnosis 4: {'condition': 'Whiplash injury to neck', 'condition status': 'Not Extracted', 'start date': '2016-02-09', 'end date': '2016-03-08'}
Prior Diagnosis 5: {'condition': 'Acute viral pharyngitis (disorder)', 'condition status': 'Not Extracted', 'start date': '2016-05-20', 'end date': '2016-06-02'}
Last Carbon Dioxide measurement on 2014-06-08 00:00:00: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mmol/L', 'value': 21.0}
Prior measurements of the same type 1: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mmol/L', 'value': 28.0}
Prior measurements of the same type 2: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mmol/L', 'value': 21.0}
Prior measurements of different types 1: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': '%', 'value': 6.0}
Prior measurements of different types 2: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'cm', 'value': 163.56}
Prior measurements of different types 3: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'kg', 'value': 112.9}
Prior measurements of different types 4: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'kg/m2', 'value': 42.2}
Prior measurements of different types 5: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mmHg', 'value': 133.0}
Prior measurements of different types 6: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mmHg', 'value': 88.0}
Prior measurements of different types 7: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': '%', 'value': 6.0}
Prior measurements of different types 8: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mg/dL', 'value': 79.0}
Prior measurements of different types 9: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mg/dL', 'value': 18.0}
Prior measurements of different types 10: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 11: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mg/dL', 'value': 10.16}
Prior measurements of different types 12: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mmol/L', 'value': 143.0}
Prior measurements of different types 13: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mmol/L', 'value': 4.78}
Prior measurements of different types 14: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2012-04-29T00:00:00', 'unit': 'mmol/L', 'value': 105.0}
Prior measurements of different types 15: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': '%', 'value': 5.8}
Prior measurements of different types 16: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'cm', 'value': 163.56}
Prior measurements of different types 17: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'kg', 'value': 116.01}
Prior measurements of different types 18: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'kg/m2', 'value': 43.36}
Prior measurements of different types 19: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mmHg', 'value': 116.0}
Prior measurements of different types 20: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mmHg', 'value': 83.0}
Prior measurements of different types 21: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': '%', 'value': 5.8}
Prior measurements of different types 22: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mg/dL', 'value': 99.0}
Prior measurements of different types 23: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mg/dL', 'value': 18.0}
Prior measurements of different types 24: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 25: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mg/dL', 'value': 9.25}
Prior measurements of different types 26: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mmol/L', 'value': 144.0}
Prior measurements of different types 27: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mmol/L', 'value': 3.91}
Prior measurements of different types 28: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mmol/L', 'value': 103.0}
Prior measurements of different types 29: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mg/dL', 'value': 172.0}
Prior measurements of different types 30: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mg/dL', 'value': 131.0}
Prior measurements of different types 31: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mg/dL', 'value': 65.0}
Prior measurements of different types 32: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-06-08T00:00:00', 'unit': 'mg/dL', 'value': 80.0}
Prior measurements of different types 33: {'measurement': 'Oral temperature', 'measurement type': 'EHR encounter record', 'measurement date': '2016-05-22T00:00:00', 'unit': 'Cel', 'value': 37.0}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-04-29', 'end datetime': '2012-04-29'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-06-08', 'end datetime': '2014-06-08'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-06-09', 'end datetime': '2014-06-09'}
Visit 4: {'visit': 'Emergency Room Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-10-05', 'end datetime': '2014-10-05'}
Visit 5: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-12-29', 'end datetime': '2014-12-29'}
Visit 6: {'visit': 'Emergency Room Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-02-09', 'end datetime': '2016-02-09'}
Visit 7: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-05-22', 'end datetime': '2016-05-22'}
Medication 1: {'Drug name': 'Acetaminophen 160 MG', 'Start datetime': '2014-06-09', 'End datetime': '2014-06-26', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': 'Ibuprofen 200 MG Oral Tablet', 'Start datetime': '2016-02-09', 'End datetime': '2016-03-08', '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': '2012-04-29', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2014-06-08', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
</PatientData>
Based on the trajectory above, what will the patient's **next** Carbon Dioxide value be on 2016-11-02 00:00:00?
A. 20.0
B. 29.0
C. 21.0
D. 20.0
E. 27.0
Please share a single capital letter representing your selected answer: 
20.0 29.0 21.0 20.0 27.0