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: 
Select and explain. 
A. Pseudomucinous cystadenoma, B. Papillary cystadenoma, C. Dermoid cyst, D. Mucinous cyst
C: Dermoid cyst
Answer: C: Dermoid cyst 
Explanation: Dermoid cyst