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': 1929}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2010-12-07', 'end datetime': '2010-12-07'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-04-24', 'end datetime': '2011-04-24'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-11-29', 'end datetime': '2011-11-29'}
Visit 4: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-04-26', 'end datetime': '2012-04-26'}
Visit 5: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-11-19', 'end datetime': '2012-11-19'}
Visit 6: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2013-01-03', 'end datetime': '2013-01-03'}
Visit 7: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2013-04-22', 'end datetime': '2013-04-22'}
Visit 8: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-01-11', 'end datetime': '2014-01-11'}
Visit 9: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-02-09', 'end datetime': '2015-02-09'}
Visit 10: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-02-27', 'end datetime': '2015-02-27'}
Visit 11: {'visit': 'Emergency Room Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-12-11', 'end datetime': '2015-12-11'}
Visit 12: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-01-15', 'end datetime': '2016-01-15'}
Visit 13: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-03-28', 'end datetime': '2016-03-28'}
Visit 14: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-11-14', 'end datetime': '2016-11-14'}
Visit 15: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-12-05', 'end datetime': '2016-12-05'}
Visit 16: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2017-02-09', 'end datetime': '2017-02-09'}
Measurement 1: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2010-12-07T00:00:00', 'unit': 'cm', 'value': 175.73}
Measurement 2: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2010-12-07T00:00:00', 'unit': 'kg', 'value': 116.02}
Measurement 3: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2010-12-07T00:00:00', 'unit': 'kg/m2', 'value': 37.57}
Measurement 4: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2010-12-07T00:00:00', 'unit': 'mmHg', 'value': 110.0}
Measurement 5: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2010-12-07T00:00:00', 'unit': 'mmHg', 'value': 71.0}
Measurement 6: {'measurement': 'Total score [MMSE]', 'measurement type': 'EHR encounter record', 'measurement date': '2011-04-24T00:00:00', 'unit': '(score)', 'value': 12.0}
Measurement 7: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-29T00:00:00', 'unit': 'cm', 'value': 175.73}
Measurement 8: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-29T00:00:00', 'unit': 'kg', 'value': 114.89}
Measurement 9: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-29T00:00:00', 'unit': 'kg/m2', 'value': 37.21}
Measurement 10: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-29T00:00:00', 'unit': 'mmHg', 'value': 127.0}
Measurement 11: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-29T00:00:00', 'unit': 'mmHg', 'value': 77.0}
Measurement 12: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-29T00:00:00', 'unit': 'mg/dL', 'value': 192.0}
Measurement 13: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-29T00:00:00', 'unit': 'mg/dL', 'value': 140.0}
Measurement 14: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-29T00:00:00', 'unit': 'mg/dL', 'value': 89.0}
Measurement 15: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-11-29T00:00:00', 'unit': 'mg/dL', 'value': 75.0}
Measurement 16: {'measurement': 'Total score [MMSE]', 'measurement type': 'EHR encounter record', 'measurement date': '2012-11-19T00:00:00', 'unit': '(score)', 'value': 12.0}
Measurement 17: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-03T00:00:00', 'unit': 'cm', 'value': 175.73}
Measurement 18: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-03T00:00:00', 'unit': 'kg', 'value': 113.25}
Measurement 19: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-03T00:00:00', 'unit': 'kg/m2', 'value': 36.67}
Measurement 20: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-03T00:00:00', 'unit': 'mmHg', 'value': 139.0}
Measurement 21: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2013-01-03T00:00:00', 'unit': 'mmHg', 'value': 72.0}
Measurement 22: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-11T00:00:00', 'unit': 'cm', 'value': 175.73}
Measurement 23: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-11T00:00:00', 'unit': 'kg', 'value': 111.34}
Measurement 24: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-11T00:00:00', 'unit': 'kg/m2', 'value': 36.06}
Measurement 25: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-11T00:00:00', 'unit': 'mmHg', 'value': 124.0}
Measurement 26: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-01-11T00:00:00', 'unit': 'mmHg', 'value': 87.0}
Measurement 27: {'measurement': 'Total score [MMSE]', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-09T00:00:00', 'unit': '(score)', 'value': 1.0}
Measurement 28: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-27T00:00:00', 'unit': 'cm', 'value': 175.73}
Measurement 29: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-27T00:00:00', 'unit': 'kg', 'value': 109.94}
Measurement 30: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-27T00:00:00', 'unit': 'kg/m2', 'value': 35.6}
Measurement 31: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-27T00:00:00', 'unit': 'mmHg', 'value': 126.0}
Measurement 32: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-27T00:00:00', 'unit': 'mmHg', 'value': 88.0}
Measurement 33: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-27T00:00:00', 'unit': 'mg/dL', 'value': 196.0}
Measurement 34: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-27T00:00:00', 'unit': 'mg/dL', 'value': 121.0}
Measurement 35: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-27T00:00:00', 'unit': 'mg/dL', 'value': 100.0}
Measurement 36: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2015-02-27T00:00:00', 'unit': 'mg/dL', 'value': 71.0}
Measurement 37: {'measurement': 'DXA [T-score] Bone density', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-11T00:00:00', 'unit': '{T-score}', 'value': -0.01}
Measurement 38: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2016-01-15T00:00:00', 'unit': 'cm', 'value': 175.73}
Measurement 39: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2016-01-15T00:00:00', 'unit': 'kg', 'value': 108.7}
Measurement 40: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2016-01-15T00:00:00', 'unit': 'kg/m2', 'value': 35.2}
Measurement 41: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-01-15T00:00:00', 'unit': 'mmHg', 'value': 126.0}
Measurement 42: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-01-15T00:00:00', 'unit': 'mmHg', 'value': 81.0}
Measurement 43: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2016-12-05T00:00:00', 'unit': 'cm', 'value': 175.73}
Measurement 44: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2016-12-05T00:00:00', 'unit': 'kg', 'value': 107.39}
Measurement 45: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2016-12-05T00:00:00', 'unit': 'kg/m2', 'value': 34.78}
Measurement 46: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-12-05T00:00:00', 'unit': 'mmHg', 'value': 103.0}
Measurement 47: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2016-12-05T00:00:00', 'unit': 'mmHg', 'value': 83.0}
Measurement 48: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2017-02-09T00:00:00', 'unit': 'cm', 'value': 175.73}
Measurement 49: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2017-02-09T00:00:00', 'unit': 'kg', 'value': 107.39}
Measurement 50: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2017-02-09T00:00:00', 'unit': 'kg/m2', 'value': 34.78}
Measurement 51: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2017-02-09T00:00:00', 'unit': 'mmHg', 'value': 125.0}
Measurement 52: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2017-02-09T00:00:00', 'unit': 'mmHg', 'value': 80.0}
Procedure 1: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2010-12-07', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2013-01-03', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 3: {'procedure': 'Measurement of respiratory function (procedure)', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2013-04-22', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 4: {'procedure': 'Admission to orthopedic department', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2015-12-11', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 5: {'procedure': 'Bone density scan (procedure)', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2015-12-11', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 6: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2016-01-15', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 7: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2016-12-05', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Current Medications:
Medication 1: {'Drug name': 'Penicillin V Potassium 500 MG', 'Start datetime': '1956-06-24', 'End datetime': '1956-06-24', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': 'Penicillin V Potassium 500 MG', 'Start datetime': '1958-01-12', 'End datetime': '1958-01-12', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 3: {'Drug name': 'Leucovorin 100 MG Injection', 'Start datetime': '1981-05-28', 'End datetime': '1981-05-28', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 4: {'Drug name': 'oxaliplatin 5 MG/ML [Eloxatin]', 'Start datetime': '1981-05-28', 'End datetime': '1981-05-28', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 5: {'Drug name': 'Leucovorin 100 MG Injection', 'Start datetime': '1981-06-28', 'End datetime': '1981-06-28', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 6: {'Drug name': 'oxaliplatin 5 MG/ML [Eloxatin]', 'Start datetime': '1981-06-28', 'End datetime': '1981-06-28', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 7: {'Drug name': 'Leucovorin 100 MG Injection', 'Start datetime': '1981-07-29', 'End datetime': '1981-07-29', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 8: {'Drug name': 'oxaliplatin 5 MG/ML [Eloxatin]', 'Start datetime': '1981-07-29', 'End datetime': '1981-07-29', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 9: {'Drug name': 'Leucovorin 100 MG Injection', 'Start datetime': '1981-08-31', 'End datetime': '1981-08-31', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 10: {'Drug name': 'oxaliplatin 5 MG/ML [Eloxatin]', 'Start datetime': '1981-08-31', 'End datetime': '1981-08-31', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 11: {'Drug name': 'Leucovorin 100 MG Injection', 'Start datetime': '1981-10-02', 'End datetime': '1981-10-02', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 12: {'Drug name': 'oxaliplatin 5 MG/ML [Eloxatin]', 'Start datetime': '1981-10-02', 'End datetime': '1981-10-02', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 13: {'Drug name': 'Leucovorin 100 MG Injection', 'Start datetime': '1981-10-31', 'End datetime': '1981-10-31', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 14: {'Drug name': 'oxaliplatin 5 MG/ML [Eloxatin]', 'Start datetime': '1981-10-31', 'End datetime': '1981-10-31', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 15: {'Drug name': 'Penicillin V Potassium 500 MG', 'Start datetime': '1986-08-30', 'End datetime': '1986-08-30', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 16: {'Drug name': 'Galantamine 4 MG [Razadyne]', 'Start datetime': '2009-10-28', 'End datetime': '2009-10-28', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 17: {'Drug name': 'Dextromethorphan Hydrobromide 1 MG/ML', 'Start datetime': '2013-04-22', 'End datetime': '2013-05-03', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 18: {'Drug name': 'Acetaminophen 325 MG / HYDROcodone Bitartrate 7.5 MG Oral Tablet', 'Start datetime': '2015-12-11', 'End datetime': '2016-01-22', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 19: {'Drug name': 'Naproxen sodium 220 MG Oral Tablet', 'Start datetime': '2015-12-11', 'End datetime': '2016-03-28', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 20: {'Drug name': 'Dextromethorphan Hydrobromide 1 MG/ML', 'Start datetime': '2016-11-14', 'End datetime': '2016-12-02', '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. 0.65 ML depo-subQ provera 160 MG/ML Prefilled Syringe
B. Alendronic acid 10 MG [Fosamax]
C. Memantine hydrochloride 2 MG/ML [Namenda]
D. Methylphenidate Hydrochloride 20 MG [Ritalin]
E. Loratadine 5 MG Chewable Tablet

Please share a single capital letter representing your selected answer: 
0.65 ML depo-subQ provera 160 MG/ML Prefilled Syringe Alendronic acid 10 MG [Fosamax] Memantine hydrochloride 2 MG/ML [Namenda] Methylphenidate Hydrochloride 20 MG [Ritalin] Loratadine 5 MG Chewable Tablet