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
Ovarian tumours causing masculanization are : Gynandroblastoma Arrhenoblastoma Dysgerminoma Gonadoblastoma 
Select and explain. 
A. I, II, B. I, C. II, IV, D. I, II, IV
A: I, II
Answer: A: I, II 
Explanation: l, ll