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': 1953}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2005-01-05', 'end datetime': '2005-01-05'}
Measurement 1: {'measurement': 'Pulmonary emphysema (disorder)', 'measurement type': 'EHR encounter record', 'measurement date': '2005-01-05T00:00:00', 'unit': None, 'value': None}
Current Medications:
Medication 1: {'Drug name': '3 ML liraglutide 6 MG/ML Pen Injector', 'Start datetime': '1995-01-19', 'End datetime': '1997-04-26', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': 'Penicillin V Potassium 500 MG', 'Start datetime': '2001-07-18', 'End datetime': '2001-07-18', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 3: {'Drug name': '3 ML liraglutide 6 MG/ML Pen Injector', 'Start datetime': '2001-11-27', 'End datetime': '2003-12-26', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 4: {'Drug name': '3 ML liraglutide 6 MG/ML Pen Injector', 'Start datetime': '2005-01-05', 'End datetime': '2005-01-05', '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. Natazia 28 Day Pack
B. Kyleena 19.5 MG Intrauterine System
C. 24 HR Metformin hydrochloride 500 MG Extended Release Oral Tablet
D. Allopurinol 100 MG [Zyloprim]
E. predniSONE 5 MG Oral Tablet

Please share a single capital letter representing your selected answer: 
Natazia 28 Day Pack Kyleena 19.5 MG Intrauterine System 24 HR Metformin hydrochloride 500 MG Extended Release Oral Tablet Allopurinol 100 MG [Zyloprim] predniSONE 5 MG Oral Tablet