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': 'MALE', 'year of birth': 1991}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-05-09', 'end datetime': '2011-05-09'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-11-09', 'end datetime': '2011-11-09'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-06-25', 'end datetime': '2012-06-25'}
Visit 4: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-07-20', 'end datetime': '2012-07-20'}
Visit 5: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-03-22', 'end datetime': '2015-03-22'}
Visit 6: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2017-04-02', 'end datetime': '2017-04-02'}
Measurement 1: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-09T00:00:00', 'unit': 'cm', 'value': 181.94}
Measurement 2: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-09T00:00:00', 'unit': 'kg', 'value': 61.75}
Measurement 3: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-09T00:00:00', 'unit': 'kg/m2', 'value': 18.65}
Measurement 4: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-09T00:00:00', 'unit': 'mmHg', 'value': 198.0}
Measurement 5: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-09T00:00:00', 'unit': 'mmHg', 'value': 112.0}
Measurement 6: {'measurement': 'Estimated Glomerular Filtration Rate', 'measurement type': 'EHR encounter record', 'measurement date': '2011-05-09T00:00:00', 'unit': 'mL/min/{1.73_m2}', 'value': 60.0}
Measurement 7: {'measurement': 'Oral temperature', 'measurement type': 'EHR encounter record', 'measurement date': '2012-06-25T00:00:00', 'unit': 'Cel', 'value': 38.0}
Measurement 8: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2012-07-20T00:00:00', 'unit': 'cm', 'value': 182.01}
Measurement 9: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2012-07-20T00:00:00', 'unit': 'kg', 'value': 63.88}
Measurement 10: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2012-07-20T00:00:00', 'unit': 'kg/m2', 'value': 19.28}
Measurement 11: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-07-20T00:00:00', 'unit': 'mmHg', 'value': 171.0}
Measurement 12: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-07-20T00:00:00', 'unit': 'mmHg', 'value': 118.0}
Measurement 13: {'measurement': 'Estimated Glomerular Filtration Rate', 'measurement type': 'EHR encounter record', 'measurement date': '2012-07-20T00:00:00', 'unit': 'mL/min/{1.73_m2}', 'value': 60.0}
Measurement 14: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2015-03-22T00:00:00', 'unit': 'cm', 'value': 182.01}
Measurement 15: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2015-03-22T00:00:00', 'unit': 'kg', 'value': 68.57}
Measurement 16: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2015-03-22T00:00:00', 'unit': 'kg/m2', 'value': 20.7}
Measurement 17: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-03-22T00:00:00', 'unit': 'mmHg', 'value': 145.0}
Measurement 18: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-03-22T00:00:00', 'unit': 'mmHg', 'value': 93.0}
Measurement 19: {'measurement': 'Estimated Glomerular Filtration Rate', 'measurement type': 'EHR encounter record', 'measurement date': '2015-03-22T00:00:00', 'unit': 'mL/min/{1.73_m2}', 'value': 60.0}
Procedure 1: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2011-05-09', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
</PatientData>

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

A. Loratadine 10 MG Oral Tablet
B. Estrostep Fe 28 Day Pack
C.  Amoxicillin 250 MG / Clavulanate 125 MG [Augmentin]
D. Errin 28 Day Pack
E. Memantine hydrochloride 2 MG/ML [Namenda]

Please share a single capital letter representing your selected answer: 
Loratadine 10 MG Oral Tablet Estrostep Fe 28 Day Pack  Amoxicillin 250 MG / Clavulanate 125 MG [Augmentin] Errin 28 Day Pack Memantine hydrochloride 2 MG/ML [Namenda]