You are an assistant tasked with analyzing medical histories to provide a second opinion on possible future diagnoses.

<PatientData>
Demographics: {'race': 'Asian', 'gender': 'MALE', 'year of birth': 1951}
Prior Diagnosis 1: {'condition': 'Seasonal allergic rhinitis', 'condition status': 'Not Extracted', 'start date': '1953-12-14', 'end date': None}
Prior Diagnosis 2: {'condition': 'Hypertension', 'condition status': 'Not Extracted', 'start date': '1969-12-04', 'end date': None}
Prior Diagnosis 3: {'condition': 'Coronary Heart Disease', 'condition status': 'Not Extracted', 'start date': '1989-10-12', 'end date': None}
Medication 1: {'Drug name': 'Chlorpheniramine 2 MG Chewable Tablet', 'Start datetime': '1953-12-14', 'End datetime': '1953-12-14', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': 'Nitroglycerin 0.4 MG/ACTUAT [Nitrolingual]', 'Start datetime': '1989-10-12', 'End datetime': '1989-10-12', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
</PatientData>
Based on the trajectory above, which diagnosis is the patient **most likely** to receive by 1990-05-21?
A. Cardiac Arrest
B. History of amputation of foot (situation)
C. Acute allergic reaction
D. Small cell carcinoma of lung (disorder)
E. History of myocardial infarction (situation)
Please share a single capital letter representing your selected answer: 
Cardiac Arrest History of amputation of foot (situation) Acute allergic reaction Small cell carcinoma of lung (disorder) History of myocardial infarction (situation)