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
Which of the following ovarian tumors are associated with precocious puberty in young girls 
Select and explain. 
A. Immature teratoma, B. Granulosa cell tumor, C. Dysgerminoma, D. Krukenberg tumor
B: Granulosa cell tumor
Answer: B: Granulosa cell tumor 
Explanation: Granulosa cell tumors frequently secrete oestrogen resulting in precocious puberty.