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': 1971}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-08-12', 'end datetime': '2011-08-12'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-09-26', 'end datetime': '2011-09-26'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-09-30', 'end datetime': '2014-09-30'}
Visit 4: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-11-17', 'end datetime': '2016-11-17'}
Visit 5: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-11-25', 'end datetime': '2016-11-25'}
Measurement 1: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'cm', 'value': 183.58}
Measurement 2: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'kg', 'value': 117.55}
Measurement 3: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'kg/m2', 'value': 34.88}
Measurement 4: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'mmHg', 'value': 200.0}
Measurement 5: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'mmHg', 'value': 112.0}
Measurement 6: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'mg/dL', 'value': 166.0}
Measurement 7: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'mg/dL', 'value': 141.0}
Measurement 8: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'mg/dL', 'value': 64.0}
Measurement 9: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'mg/dL', 'value': 73.0}
Measurement 10: {'measurement': 'Estimated Glomerular Filtration Rate', 'measurement type': 'EHR encounter record', 'measurement date': '2011-08-12T00:00:00', 'unit': 'mL/min/{1.73_m2}', 'value': 60.0}
Measurement 11: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'cm', 'value': 183.58}
Measurement 12: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'kg', 'value': 121.54}
Measurement 13: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'kg/m2', 'value': 36.06}
Measurement 14: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'mmHg', 'value': 167.0}
Measurement 15: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'mmHg', 'value': 98.0}
Measurement 16: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'mg/dL', 'value': 166.0}
Measurement 17: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'mg/dL', 'value': 126.0}
Measurement 18: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'mg/dL', 'value': 61.0}
Measurement 19: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'mg/dL', 'value': 79.0}
Measurement 20: {'measurement': 'Estimated Glomerular Filtration Rate', 'measurement type': 'EHR encounter record', 'measurement date': '2014-09-30T00:00:00', 'unit': 'mL/min/{1.73_m2}', 'value': 60.0}
Measurement 21: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-25T00:00:00', 'unit': 'cm', 'value': 183.58}
Measurement 22: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-25T00:00:00', 'unit': 'kg', 'value': 125.19}
Measurement 23: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-25T00:00:00', 'unit': 'kg/m2', 'value': 37.15}
Measurement 24: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-25T00:00:00', 'unit': 'mmHg', 'value': 151.0}
Measurement 25: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-25T00:00:00', 'unit': 'mmHg', 'value': 116.0}
Measurement 26: {'measurement': 'Estimated Glomerular Filtration Rate', 'measurement type': 'EHR encounter record', 'measurement date': '2016-11-25T00:00:00', 'unit': 'mL/min/{1.73_m2}', 'value': 60.0}
Current Medications:
Medication 1: {'Drug name': 'Penicillin V Potassium 500 MG', 'Start datetime': '2002-04-21', 'End datetime': '2002-04-21', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': ' Amoxicillin 250 MG / Clavulanate 125 MG [Augmentin]', 'Start datetime': '2016-11-17', 'End datetime': '2016-12-15', '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. Estrostep Fe 28 Day Pack
B. Penicillin V Potassium 250 MG
C. Atomoxetine 100 MG [Strattera]
D. Colchicine 0.6 MG [Colcrys]
E. Methylphenidate Hydrochloride 20 MG [Ritalin]

Please share a single capital letter representing your selected answer: 
Estrostep Fe 28 Day Pack Penicillin V Potassium 250 MG Atomoxetine 100 MG [Strattera] Colchicine 0.6 MG [Colcrys] Methylphenidate Hydrochloride 20 MG [Ritalin]