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: Gynaecology & Obstetrics
[{'content': 'Most common CNS tumor to cause precocious puberty is \nSelect and explain. \nA. Astrocytoma, B. Neuro fibroma, C. Ependymoma, D. Hamartoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Hamartoma is most common CNS tumor to cause precocious puberty.', 'role': 'assistant'}]