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': 1990}
Prior Diagnosis 1: {'condition': 'Hypertension', 'condition status': 'Not Extracted', 'start date': '2008-10-08', 'end date': None}
Prior Diagnosis 2: {'condition': 'Acute bacterial sinusitis (disorder)', 'condition status': 'Not Extracted', 'start date': '2010-10-08', 'end date': '2010-11-06'}
Prior Diagnosis 3: {'condition': 'Sprain of ankle', 'condition status': 'Not Extracted', 'start date': '2011-11-17', 'end date': '2011-12-07'}
Last Body Mass Index measurement on 2011-01-14 00:00:00: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-01-14T00:00:00', 'unit': 'kg/m2', 'value': 26.88}
Prior measurements of the same type 1: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-01-14T00:00:00', 'unit': 'kg/m2', 'value': 26.88}
Prior measurements of different types 1: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-01-14T00:00:00', 'unit': 'cm', 'value': 177.9}
Prior measurements of different types 2: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-01-14T00:00:00', 'unit': 'kg', 'value': 85.08}
Prior measurements of different types 3: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-01-14T00:00:00', 'unit': 'mmHg', 'value': 193.0}
Prior measurements of different types 4: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-01-14T00:00:00', 'unit': 'mmHg', 'value': 120.0}
Prior measurements of different types 5: {'measurement': 'Estimated Glomerular Filtration Rate', 'measurement type': 'EHR encounter record', 'measurement date': '2011-01-14T00:00:00', 'unit': 'mL/min/{1.73_m2}', 'value': 60.0}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2010-10-14', 'end datetime': '2010-10-14'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-01-14', 'end datetime': '2011-01-14'}
Visit 3: {'visit': 'Emergency Room Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-11-17', 'end datetime': '2011-11-17'}
Medication 1: {'Drug name': 'Penicillin V Potassium 250 MG', 'Start datetime': '2007-02-17', 'End datetime': '2007-02-17', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': ' Amoxicillin 250 MG / Clavulanate 125 MG [Augmentin]', 'Start datetime': '2010-10-14', 'End datetime': '2010-11-06', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 3: {'Drug name': 'Acetaminophen 325 MG Oral Tablet', 'Start datetime': '2011-11-17', 'End datetime': '2011-12-07', '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': '2011-01-14', '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 2014-05-01 00:00:00?
A. 38.25
B. 39.78
C. 31.08
D. 21.49
E. 28.15
Please share a single capital letter representing your selected answer: 
38.25 39.78 31.08 21.49 28.15