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
[{'content': 'The drug which is contraindicated in haemophilia is \nSelect and explain. \nA. Aspirin, B. Penicillinin, C. Amino epsilon caproic acid, D. Diphenyl hydantoin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]