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': 'A person has different multiple personalities is suffering from - \nSelect and explain. \nA. Mania, B. Personality disorder, C. Paranoid schizophrenia, D. Dissociative disorder', 'role': 'user'}, {'content': 'Answer: D \nExplanation: More than one personality appears to possess the individuals, showing their characteristic behavior is seen in dissociative identity (multiple personality) disorder.', 'role': 'assistant'}]