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': 'FEMALE', 'year of birth': 1995}
Prior Diagnosis 1: {'condition': 'Viral sinusitis (disorder)', 'condition status': 'Not Extracted', 'start date': '2012-03-23', 'end date': '2012-04-21'}
Prior Diagnosis 2: {'condition': 'Hypertension', 'condition status': 'Not Extracted', 'start date': '2014-01-18', 'end date': None}
Prior Diagnosis 3: {'condition': 'Injury of anterior cruciate ligament', 'condition status': 'Not Extracted', 'start date': '2014-09-30', 'end date': '2014-12-14'}
Prior Diagnosis 4: {'condition': 'Streptococcal sore throat (disorder)', 'condition status': 'Not Extracted', 'start date': '2015-03-08', 'end date': '2015-03-22'}
Last Body Mass Index measurement on 2015-01-02 00:00:00: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2015-01-02T00:00:00', 'unit': 'kg/m2', 'value': 21.48}
Prior measurements of the same type 1: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-03-28T00:00:00', 'unit': 'kg/m2', 'value': 20.14}
Prior measurements of the same type 2: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2012-03-20T00:00:00', 'unit': 'kg/m2', 'value': 20.47}
Prior measurements of the same type 3: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-25T00:00:00', 'unit': 'kg/m2', 'value': 20.72}
Prior measurements of the same type 4: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-18T00:00:00', 'unit': 'kg/m2', 'value': 21.11}
Prior measurements of the same type 5: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2015-01-02T00:00:00', 'unit': 'kg/m2', 'value': 21.48}
Prior measurements of different types 1: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-03-28T00:00:00', 'unit': 'cm', 'value': 172.13}
Prior measurements of different types 2: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-03-28T00:00:00', 'unit': 'kg', 'value': 59.67}
Prior measurements of different types 3: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-03-28T00:00:00', 'unit': 'mmHg', 'value': 138.0}
Prior measurements of different types 4: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-03-28T00:00:00', 'unit': 'mmHg', 'value': 84.0}
Prior measurements of different types 5: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2012-03-20T00:00:00', 'unit': 'cm', 'value': 172.5}
Prior measurements of different types 6: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2012-03-20T00:00:00', 'unit': 'kg', 'value': 60.9}
Prior measurements of different types 7: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-03-20T00:00:00', 'unit': 'mmHg', 'value': 106.0}
Prior measurements of different types 8: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-03-20T00:00:00', 'unit': 'mmHg', 'value': 76.0}
Prior measurements of different types 9: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-25T00:00:00', 'unit': 'cm', 'value': 172.68}
Prior measurements of different types 10: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-25T00:00:00', 'unit': 'kg', 'value': 61.8}
Prior measurements of different types 11: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-25T00:00:00', 'unit': 'mmHg', 'value': 133.0}
Prior measurements of different types 12: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-25T00:00:00', 'unit': 'mmHg', 'value': 80.0}
Prior measurements of different types 13: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-18T00:00:00', 'unit': 'cm', 'value': 172.82}
Prior measurements of different types 14: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-18T00:00:00', 'unit': 'kg', 'value': 63.04}
Prior measurements of different types 15: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-18T00:00:00', 'unit': 'mmHg', 'value': 173.0}
Prior measurements of different types 16: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-18T00:00:00', 'unit': 'mmHg', 'value': 116.0}
Prior measurements of different types 17: {'measurement': 'Estimated Glomerular Filtration Rate', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-18T00:00:00', 'unit': 'mL/min/{1.73_m2}', 'value': 60.0}
Prior measurements of different types 18: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2015-01-02T00:00:00', 'unit': 'cm', 'value': 172.91}
Prior measurements of different types 19: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2015-01-02T00:00:00', 'unit': 'kg', 'value': 64.22}
Prior measurements of different types 20: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-01-02T00:00:00', 'unit': 'mmHg', 'value': 172.0}
Prior measurements of different types 21: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-01-02T00:00:00', 'unit': 'mmHg', 'value': 93.0}
Prior measurements of different types 22: {'measurement': 'Estimated Glomerular Filtration Rate', 'measurement type': 'EHR encounter record', 'measurement date': '2015-01-02T00:00:00', 'unit': 'mL/min/{1.73_m2}', 'value': 60.0}
Prior measurements of different types 23: {'measurement': 'Oral temperature', 'measurement type': 'EHR encounter record', 'measurement date': '2015-03-11T00:00:00', 'unit': 'Cel', 'value': 38.88}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-03-28', 'end datetime': '2011-03-28'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-03-20', 'end datetime': '2012-03-20'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-03-31', 'end datetime': '2012-03-31'}
Visit 4: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2013-01-25', 'end datetime': '2013-01-25'}
Visit 5: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-01-18', 'end datetime': '2014-01-18'}
Visit 6: {'visit': 'Emergency Room Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-09-30', 'end datetime': '2014-09-30'}
Visit 7: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-10-07', 'end datetime': '2014-10-07'}
Visit 8: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-01-02', 'end datetime': '2015-01-02'}
Visit 9: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-03-11', 'end datetime': '2015-03-11'}
Medication 1: {'Drug name': 'Ortho Tri-Cyclen 28 Day Pack', 'Start datetime': '2009-05-06', 'End datetime': '2009-05-06', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': 'Acetaminophen 325 MG / oxyCODONE Hydrochloride 5 MG Oral Tablet', 'Start datetime': '2014-10-07', 'End datetime': '2015-02-01', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 3: {'Drug name': 'Ibuprofen 200 MG Oral Tablet', 'Start datetime': '2014-10-07', 'End datetime': '2014-12-14', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 4: {'Drug name': 'Penicillin V Potassium 500 MG', 'Start datetime': '2015-03-11', 'End datetime': '2015-03-11', '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': '2014-01-18', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Surgical manipulation of joint of knee', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2014-10-07', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 3: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2015-01-02', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
</PatientData>
Based on the trajectory above, what will the patient's **next** Body Mass Index value be on 2015-12-19 00:00:00?
A. 18.96
B. 13.65
C. 22.22
D. 21.89
E. 32.33
Please share a single capital letter representing your selected answer: 
18.96 13.65 22.22 21.89 32.33