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': 1932}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2010-05-17', 'end datetime': '2010-05-17'}
Measurement 1: {'measurement': "Alzheimer's disease (disorder)", 'measurement type': 'EHR encounter record', 'measurement date': '2010-05-17T00:00:00', 'unit': None, 'value': None}
Current Medications:
Medication 1: {'Drug name': 'Galantamine 4 MG [Razadyne]', 'Start datetime': '2005-01-15', 'End datetime': '2005-01-15', '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. canagliflozin 100 MG Oral Tablet
B. Nexplanon 68 MG Drug Implant
C. 1 ML Epinephrine 1 MG/ML Prefilled Syringe
D. Penicillin V Potassium 500 MG
E. Memantine hydrochloride 2 MG/ML [Namenda]

Please share a single capital letter representing your selected answer: 
canagliflozin 100 MG Oral Tablet Nexplanon 68 MG Drug Implant 1 ML Epinephrine 1 MG/ML Prefilled Syringe Penicillin V Potassium 500 MG Memantine hydrochloride 2 MG/ML [Namenda]