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
All of the following ovarian tumours arise from surface epithelium EXCEPT : 
Select and explain. 
A. Mucinous cystadenoma, B. Endometrial carcinoma, C. Brenner tumour, D. Benign cystic teratoma
D: Benign cystic teratoma
Answer: D: Benign cystic teratoma 
Explanation: Benign cystic teratoma