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 commonly arise from : 
Select and explain. 
A. Stroma, B. Germinal epithelium, C. Surface epithelium, D. None
C: Surface epithelium
Answer: C: Surface epithelium 
Explanation: Surface epithelium