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 acamprosate is therapeutically used for: \nSelect and explain. \nA. Cough, B. Rickets, C. Thrombolysis, D. Maintenance therapy of alcohol abstinence', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]