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 drugs may cause thrombocytopenia - 
Select and explain. 
A. Ticlopidine, B. Clopidogrel, C. Abciximab, D. Aspirin
A: Ticlopidine
Answer: A: Ticlopidine 
Explanation: Ans. is 'a' i.e., Ticlopidine