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': 1987}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-05-19', 'end datetime': '2011-05-19'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-08-28', 'end datetime': '2011-08-28'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-09-27', 'end datetime': '2012-09-27'}
Visit 4: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-07-04', 'end datetime': '2014-07-04'}
Visit 5: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-07-30', 'end datetime': '2015-07-30'}
Visit 6: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2017-04-03', 'end datetime': '2017-04-03'}
Measurement 1: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-19T00:00:00', 'unit': 'cm', 'value': 166.17}
Measurement 2: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-19T00:00:00', 'unit': 'kg', 'value': 50.24}
Measurement 3: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-19T00:00:00', 'unit': 'kg/m2', 'value': 18.19}
Measurement 4: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-19T00:00:00', 'unit': 'mmHg', 'value': 137.0}
Measurement 5: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-19T00:00:00', 'unit': 'mmHg', 'value': 86.0}
Measurement 6: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2014-07-04T00:00:00', 'unit': 'cm', 'value': 166.17}
Measurement 7: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2014-07-04T00:00:00', 'unit': 'kg', 'value': 54.95}
Measurement 8: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2014-07-04T00:00:00', 'unit': 'kg/m2', 'value': 19.9}
Measurement 9: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-07-04T00:00:00', 'unit': 'mmHg', 'value': 102.0}
Measurement 10: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-07-04T00:00:00', 'unit': 'mmHg', 'value': 88.0}
Measurement 11: {'measurement': 'Oral temperature', 'measurement type': 'EHR encounter record', 'measurement date': '2015-07-30T00:00:00', 'unit': 'Cel', 'value': 37.0}
Measurement 12: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2017-04-03T00:00:00', 'unit': 'cm', 'value': 166.17}
Measurement 13: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2017-04-03T00:00:00', 'unit': 'kg', 'value': 59.47}
Measurement 14: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2017-04-03T00:00:00', 'unit': 'kg/m2', 'value': 21.54}
Measurement 15: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2017-04-03T00:00:00', 'unit': 'mmHg', 'value': 118.0}
Measurement 16: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2017-04-03T00:00:00', 'unit': 'mmHg', 'value': 89.0}
Procedure 1: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2011-05-19', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Plain chest X-ray (procedure)', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2011-08-28', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Current Medications:
Medication 1: {'Drug name': 'Dextromethorphan Hydrobromide 1 MG/ML', 'Start datetime': '2011-08-28', 'End datetime': '2011-09-09', '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. Donepezil hydrochloride 10 MG / Memantine hydrochloride 28 MG [Namzaric]
B. Ibuprofen 100 MG Oral Tablet
C. NuvaRing 0.12/0.015 MG per 24HR 21 Day Vaginal Ring
D. Astemizole 10 MG Oral Tablet
E. Seasonique 91 Day Pack

Please share a single capital letter representing your selected answer: 
Donepezil hydrochloride 10 MG / Memantine hydrochloride 28 MG [Namzaric] Ibuprofen 100 MG Oral Tablet NuvaRing 0.12/0.015 MG per 24HR 21 Day Vaginal Ring Astemizole 10 MG Oral Tablet Seasonique 91 Day Pack