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': 'Treatment of obscessive-compulsive disorder includes : \nSelect and explain. \nA. Exposure & response prevention, B. Flooding, C. Psychoanalytic therapy, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A. i.e. Exposure & response prevention> B i.e. Flooding > C i.e. Psychoanalytic therapy', 'role': 'assistant'}]