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': 'All of the following may be used for detoixification therapy of chronic alcoholism except: \nSelect and explain. \nA. Naltrexone, B. Disulfiram, C. Flumazenil, D. Acamprostate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]