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
Most common ovarian tumour to undergo torsion is : 
Select and explain. 
A. Pseudomucinous cystadenoma, B. Brenner's tumour, C. Adenomyoma, D. Dermoid cyst
D: Dermoid cyst
Answer: D: Dermoid cyst 
Explanation: Dermoid cyst