This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'The ovarian tumor which is most likely to be associated with virilization is \nSelect and explain. \nA. Granulosa tumor, B. Seoli-Leydig cell tumor, C. Immature teratoma, D. Gonadoblastoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Seoli-Leydig cell tumors, which represent less than 1% of ovarian tumors, may produce symptoms of virilization. Histologically, they resemble fetal testes; clinically, they must be distinguished from other functioning ovarian neoplasms as well as from tumors of the adrenal glands, since both adrenal tumors and Seoli-Leydig tumors produce androgens. Ref: Shaw&;s Textbook of Gynaecology; 16th edition; Chapter 33; Ovarian tumors', 'role': 'assistant'}]