You are an assistant tasked with analyzing measurement histories to predict the patient's next laboratory or vital sign value.
<PatientData>
Demographics: {'race': 'White', 'gender': 'MALE', 'year of birth': 1974}
Prior Diagnosis 1: {'condition': 'Chronic obstructive bronchitis (disorder)', 'condition status': 'Not Extracted', 'start date': '2011-02-17', 'end date': None}
Prior Diagnosis 2: {'condition': 'Viral sinusitis (disorder)', 'condition status': 'Not Extracted', 'start date': '2015-08-14', 'end date': '2015-09-11'}
Last FEV1/​FVC measurement on 2014-03-12 00:00:00: {'measurement': 'FEV1/\u200bFVC', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': '%', 'value': 69.0}
Prior measurements of the same type 1: {'measurement': 'FEV1/\u200bFVC', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': '%', 'value': 69.0}
Prior measurements of the same type 2: {'measurement': 'FEV1/\u200bFVC', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': '%', 'value': 69.0}
Prior measurements of different types 1: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': 'cm', 'value': 177.55}
Prior measurements of different types 2: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': 'kg', 'value': 127.9}
Prior measurements of different types 3: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': 'kg/m2', 'value': 40.57}
Prior measurements of different types 4: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': 'mmHg', 'value': 114.0}
Prior measurements of different types 5: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': 'mmHg', 'value': 73.0}
Prior measurements of different types 6: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': 'mg/dL', 'value': 170.0}
Prior measurements of different types 7: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': 'mg/dL', 'value': 116.0}
Prior measurements of different types 8: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': 'mg/dL', 'value': 80.0}
Prior measurements of different types 9: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2011-02-17T00:00:00', 'unit': 'mg/dL', 'value': 66.0}
Prior measurements of different types 10: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': 'cm', 'value': 177.55}
Prior measurements of different types 11: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': 'kg', 'value': 132.26}
Prior measurements of different types 12: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': 'kg/m2', 'value': 41.95}
Prior measurements of different types 13: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': 'mmHg', 'value': 114.0}
Prior measurements of different types 14: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': 'mmHg', 'value': 74.0}
Prior measurements of different types 15: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': 'mg/dL', 'value': 168.0}
Prior measurements of different types 16: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': 'mg/dL', 'value': 102.0}
Prior measurements of different types 17: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': 'mg/dL', 'value': 77.0}
Prior measurements of different types 18: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2014-03-12T00:00:00', 'unit': 'mg/dL', 'value': 70.0}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-02-17', 'end datetime': '2011-02-17'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-03-12', 'end datetime': '2014-03-12'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-08-23', 'end datetime': '2015-08-23'}
Medication 1: {'Drug name': 'Fluticasone propionate 0.25 MG/ACTUAT / salmeterol 0.05 MG/ACTUAT [Advair]', 'Start datetime': '2014-03-12', 'End datetime': '2014-03-12', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Procedure 1: {'procedure': 'Spirometry (procedure)', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2011-02-17', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2011-02-17', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 3: {'procedure': 'Spirometry (procedure)', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2014-03-12', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 4: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2014-03-12', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
</PatientData>
Based on the trajectory above, what will the patient's **next** FEV1/​FVC value be on 2017-03-20 00:00:00?
A. 10.0
B. 50.0
C. 60.0
D. 73.0
E. 67.0
Please share a single capital letter representing your selected answer: 
10.0 50.0 60.0 73.0 67.0