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 is suffering from atherosclerosis, which of the following drug is most effective for the prevention of stroke in this patient 
Select and explain. 
A. Warfarin, B. Heparin, C. Aspirin, D. Digoxin
C: Aspirin
Answer: C: Aspirin 
Explanation: Antiplatelet drugs are used for the prophylaxis of arterial thrombotic conditions like stroke and MI.

Atrial fibrillation increases the risk of thromboembolism and can result in stroke