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: Psychiatry
[{'content': 'The drug of choice for obsessive compulsive disorder \nSelect and explain. \nA. Impiramine, B. Fluoxetine, C. Chlorpromazine, D. Benzodiazepine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fluoxetine (Ref. Harrison Ohle p 25521The drug of choice for obsessive compulsive disorder is Fluoxetine.', 'role': 'assistant'}]