This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Drug used in unstable angina to prevent Myocardial infarction is 
Select and explain. 
A. Aspirin, B. GTN, C. Amlodipine, D. Fasudil
A: Aspirin
Answer: A: Aspirin 
Explanation: Aspirin is an antiplatelet agent used mostly in unstable angina to prevent MI. Ref: KD Tripathi 8th ed.