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. Imipramine, B. Fluoxetine, C. Chlorpromazine, D. Benzodiazepine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Antidepressants are the drugs of choice for OCD. Amongst antidepressants SSRIs (fluoxetine, paroxetine, sertraline, citalopram) are the drug of choice for OCD.', 'role': 'assistant'}]