This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
An old women, nanda suffered stroke for which she was given alteplase. She improved considerably. To prevent the recurrence of stroke, this patient is most likely to be treated indefinitely with: 
Select and explain. 
A. Aspirin, B. Warfarin, C. Urokinase, D. Enoxaparin
A: Aspirin
Answer: A: Aspirin 
Explanation: Ref : KDT 6/e p608,609 Antiplatelet drugs like aspirin or clopidogrel are used to prevent aerial thrombosis (in diseases like MI and stroke).