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': 1911}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '1967-05-21', 'end datetime': '1967-05-21'}
Measurement 1: {'measurement': 'Pulmonary emphysema (disorder)', 'measurement type': 'EHR encounter record', 'measurement date': '1967-05-21T00:00:00', 'unit': None, 'value': None}
Current Medications:
Medication 1: {'Drug name': 'Penicillin V Potassium 250 MG', 'Start datetime': '1915-08-01', 'End datetime': '1915-08-01', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': 'Acetaminophen 325 MG / oxyCODONE Hydrochloride 5 MG Oral Tablet', 'Start datetime': '1936-09-12', 'End datetime': '1936-09-12', '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. 1 ML Depo-Provera 150 MG/ML Injection
B. Camila 28 Day Pack
C. Fluticasone propionate 0.25 MG/ACTUAT / salmeterol 0.05 MG/ACTUAT [Advair]
D. Estrostep Fe 28 Day Pack
E. 24 HR Metformin hydrochloride 500 MG Extended Release Oral Tablet

Please share a single capital letter representing your selected answer: 
1 ML Depo-Provera 150 MG/ML Injection Camila 28 Day Pack Fluticasone propionate 0.25 MG/ACTUAT / salmeterol 0.05 MG/ACTUAT [Advair] Estrostep Fe 28 Day Pack 24 HR Metformin hydrochloride 500 MG Extended Release Oral Tablet