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': 'True about manic-depressive psychosis is: \nSelect and explain. \nA. Personality deterioration is common, B. Patient keeps on suffering from mania or depression, C. Unipolar depression is uncommon, D. Patient often remits completely in between attack', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Patient often remits completely in between attack', 'role': 'assistant'}]