This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neurotic, Stress Related and Somatoform Disorders, Subject name: Psychiatry
[{'content': 'All drugs are used for treatment of OCD except: \nSelect and explain. \nA. Carbamazepine, B. Lithium, C. Fluoxetine, D. Diazepam', 'role': 'user'}, {'content': "Answer: D \nExplanation: Again, we have to choose between Carbamazepine and diazepam. Now, diazepam is a benzodiazepine and can improve anxiety temporarily however it doesn't act at core symptoms of OCD. Whereas, Carbamazepine, though has minimal evidence, but it has been found to act on core symptoms of OCD.", 'role': 'assistant'}]