This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
A patient Amit Kumar is suffering from atherosclerosis. Which of the following is the most beneficial drug for prevention of stroke in this patient ? 
Select and explain. 
A. Aspirin, B. Warfarin, C. Low dose subcutaneous heparin, D. Digoxin
A: Aspirin
Answer: A: Aspirin 
Explanation: None