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
Which of the following is antiplatelet drug ? 
Select and explain. 
A. Clopidogrel, B. Tranexemic acid, C. Streptokinase, D. Hirudin
A: Clopidogrel
Answer: A: Clopidogrel 
Explanation: Ans. is 'a' i.e., Clopidogrel