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': 'Which of the following ovarian tumors are associated with precocious puberty in young girls \nSelect and explain. \nA. Immature teratoma, B. Granulosa cell tumor, C. Dysgerminoma, D. Krukenberg tumor', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Granulosa cell tumors frequently secrete oestrogen resulting in precocious puberty.', 'role': 'assistant'}]