You are an assistant tasked with analyzing medical histories to determine which medication is missing from the patient’s current regimen.

<PatientData>
Demographics: {'race': 'White', 'gender': 'FEMALE', 'year of birth': 2015}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-04-02', 'end datetime': '2015-04-02'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-05-13', 'end datetime': '2015-05-13'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-06-17', 'end datetime': '2015-06-17'}
Visit 4: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-08-18', 'end datetime': '2015-08-18'}
Visit 5: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-10-22', 'end datetime': '2015-10-22'}
Visit 6: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-02-11', 'end datetime': '2016-02-11'}
Visit 7: {'visit': 'Emergency Room Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-03-20', 'end datetime': '2016-03-20'}
Visit 8: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-05-04', 'end datetime': '2016-05-04'}
Visit 9: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-05-13', 'end datetime': '2016-05-13'}
Visit 10: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-08-19', 'end datetime': '2016-08-19'}
Visit 11: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-11-24', 'end datetime': '2016-11-24'}
Visit 12: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-12-09', 'end datetime': '2016-12-09'}
Visit 13: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2017-01-12', 'end datetime': '2017-01-12'}
Measurement 1: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2015-05-13T00:00:00', 'unit': 'cm', 'value': 55.98}
Measurement 2: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2015-05-13T00:00:00', 'unit': 'kg', 'value': 4.12}
Measurement 3: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-05-13T00:00:00', 'unit': 'mmHg', 'value': 122.0}
Measurement 4: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-05-13T00:00:00', 'unit': 'mmHg', 'value': 77.0}
Measurement 5: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2015-06-17T00:00:00', 'unit': 'cm', 'value': 58.79}
Measurement 6: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2015-06-17T00:00:00', 'unit': 'kg', 'value': 4.77}
Measurement 7: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-06-17T00:00:00', 'unit': 'mmHg', 'value': 134.0}
Measurement 8: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-06-17T00:00:00', 'unit': 'mmHg', 'value': 88.0}
Measurement 9: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2015-08-18T00:00:00', 'unit': 'cm', 'value': 63.25}
Measurement 10: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2015-08-18T00:00:00', 'unit': 'kg', 'value': 5.9}
Measurement 11: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-08-18T00:00:00', 'unit': 'mmHg', 'value': 112.0}
Measurement 12: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-08-18T00:00:00', 'unit': 'mmHg', 'value': 89.0}
Measurement 13: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2015-10-22T00:00:00', 'unit': 'cm', 'value': 66.86}
Measurement 14: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2015-10-22T00:00:00', 'unit': 'kg', 'value': 6.87}
Measurement 15: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-10-22T00:00:00', 'unit': 'mmHg', 'value': 100.0}
Measurement 16: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-10-22T00:00:00', 'unit': 'mmHg', 'value': 87.0}
Measurement 17: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2016-02-11T00:00:00', 'unit': 'cm', 'value': 72.73}
Measurement 18: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2016-02-11T00:00:00', 'unit': 'kg', 'value': 8.38}
Measurement 19: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-02-11T00:00:00', 'unit': 'mmHg', 'value': 136.0}
Measurement 20: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-02-11T00:00:00', 'unit': 'mmHg', 'value': 84.0}
Measurement 21: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2016-05-13T00:00:00', 'unit': 'cm', 'value': 76.41}
Measurement 22: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2016-05-13T00:00:00', 'unit': 'kg', 'value': 9.23}
Measurement 23: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-05-13T00:00:00', 'unit': 'mmHg', 'value': 134.0}
Measurement 24: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-05-13T00:00:00', 'unit': 'mmHg', 'value': 77.0}
Measurement 25: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2016-08-19T00:00:00', 'unit': 'cm', 'value': 79.7}
Measurement 26: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2016-08-19T00:00:00', 'unit': 'kg', 'value': 9.92}
Measurement 27: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-08-19T00:00:00', 'unit': 'mmHg', 'value': 110.0}
Measurement 28: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-08-19T00:00:00', 'unit': 'mmHg', 'value': 89.0}
Measurement 29: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-24T00:00:00', 'unit': 'cm', 'value': 82.7}
Measurement 30: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-24T00:00:00', 'unit': 'kg', 'value': 10.49}
Measurement 31: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-24T00:00:00', 'unit': 'mmHg', 'value': 104.0}
Measurement 32: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-24T00:00:00', 'unit': 'mmHg', 'value': 71.0}
Procedure 1: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2015-08-18', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2015-10-22', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 3: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2016-02-11', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 4: {'procedure': 'Bone immobilization', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2016-03-20', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Current Medications:
Medication 1: {'Drug name': 'Ibuprofen 100 MG Oral Tablet', 'Start datetime': '2016-03-20', 'End datetime': '2016-05-04', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': 'Cefuroxime 250 MG Oral Tablet', 'Start datetime': '2016-12-09', 'End datetime': '2016-12-23', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 3: {'Drug name': 'Ibuprofen 100 MG Oral Tablet', 'Start datetime': '2016-12-09', 'End datetime': '2016-12-23', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
</PatientData>

Based on the EHR history above, which medication **should also be on the list today**?

A. Estrostep Fe 28 Day Pack
B. Acetaminophen 160 MG
C. 24 HR Metformin hydrochloride 500 MG Extended Release Oral Tablet
D. Chlorpheniramine 8 MG Oral Tablet
E. Yaz 28 Day Pack

Please share a single capital letter representing your selected answer: 
Estrostep Fe 28 Day Pack Acetaminophen 160 MG 24 HR Metformin hydrochloride 500 MG Extended Release Oral Tablet Chlorpheniramine 8 MG Oral Tablet Yaz 28 Day Pack