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': 1975}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-12-05', 'end datetime': '2011-12-05'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-01-20', 'end datetime': '2012-01-20'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-10-07', 'end datetime': '2014-10-07'}
Visit 4: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2017-04-07', 'end datetime': '2017-04-07'}
Measurement 1: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': '%', 'value': 6.2}
Measurement 2: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'cm', 'value': 172.44}
Measurement 3: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'kg', 'value': 102.51}
Measurement 4: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'kg/m2', 'value': 34.47}
Measurement 5: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mmHg', 'value': 113.0}
Measurement 6: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mmHg', 'value': 73.0}
Measurement 7: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': '%', 'value': 6.2}
Measurement 8: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mg/dL', 'value': 94.0}
Measurement 9: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mg/dL', 'value': 15.0}
Measurement 10: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Measurement 11: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mg/dL', 'value': 9.08}
Measurement 12: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mmol/L', 'value': 138.0}
Measurement 13: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mmol/L', 'value': 4.09}
Measurement 14: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mmol/L', 'value': 109.0}
Measurement 15: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mmol/L', 'value': 29.0}
Measurement 16: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mg/dL', 'value': 177.0}
Measurement 17: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mg/dL', 'value': 103.0}
Measurement 18: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mg/dL', 'value': 96.0}
Measurement 19: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-12-05T00:00:00', 'unit': 'mg/dL', 'value': 60.0}
Measurement 20: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': '%', 'value': 6.4}
Measurement 21: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'cm', 'value': 172.44}
Measurement 22: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'kg', 'value': 105.72}
Measurement 23: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'kg/m2', 'value': 35.55}
Measurement 24: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mmHg', 'value': 136.0}
Measurement 25: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mmHg', 'value': 81.0}
Measurement 26: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': '%', 'value': 6.4}
Measurement 27: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mg/dL', 'value': 64.0}
Measurement 28: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mg/dL', 'value': 14.0}
Measurement 29: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Measurement 30: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mg/dL', 'value': 10.13}
Measurement 31: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mmol/L', 'value': 136.0}
Measurement 32: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mmol/L', 'value': 4.99}
Measurement 33: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mmol/L', 'value': 110.0}
Measurement 34: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2014-10-07T00:00:00', 'unit': 'mmol/L', 'value': 27.0}
Procedure 1: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2011-12-05', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Measurement of respiratory function (procedure)', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2017-04-07', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
</PatientData>

Based on the EHR history above, which medication **should also be on the list today**?

A. Mirena 52 MG Intrauterine System
B. Tacrine 10 MG Oral Capsule
C. 24 HR Metformin hydrochloride 500 MG Extended Release Oral Tablet
D. Acetaminophen 160 MG
E. insulin human  isophane 70 UNT/ML / Regular Insulin  Human 30 UNT/ML Injectable Suspension [Humulin]

Please share a single capital letter representing your selected answer: 
Mirena 52 MG Intrauterine System Tacrine 10 MG Oral Capsule 24 HR Metformin hydrochloride 500 MG Extended Release Oral Tablet Acetaminophen 160 MG insulin human  isophane 70 UNT/ML / Regular Insulin  Human 30 UNT/ML Injectable Suspension [Humulin]