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': 'Percentage of monozygotic twins with schizophrenia \nSelect and explain. \nA. 0.10%, B. 1%, C. 10%, D. 50%', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Monozygotic twin → 46-50%; and Dizygotic twin → 12%.', 'role': 'assistant'}]