This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
[{'content': 'Diacetylmorphine is commonly called as \nSelect and explain. \nA. Heroin, B. Cocaine, C. Apomorphine, D. Marijuana', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Heroin * Diacetylmorphine is Heroin.", 'role': 'assistant'}]