This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
[{'content': 'All are antiplatelet drugs except: \nSelect and explain. \nA. Clopidogrel, B. Abciximab, C. Ticlopidine, D. Aprotinin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Aprotinin is a drug that inhibits the initiation of clot formation and fibrinolysis. All others are antiplatlet drugs. From medical pharmacology padmaja 4th edition Page no 343', 'role': 'assistant'}]