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': 'Features of obsessive-compulsive neurosis are \nSelect and explain. \nA. Repetitiveness, B. Irresistibility, C. Unpleasantness, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Repetetiveness; B i.e. Irresistibility; C i.e. Unpleasantness', 'role': 'assistant'}]