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
Commonest ovarian tumour associated with pregnancy is : 
Select and explain. 
A. Mucinous cystadenoma, B. Teratoma (Dermoid cyst), C. Brenner's tumour, D. Fibroma
B: Teratoma (Dermoid cyst)
Answer: B: Teratoma (Dermoid cyst) 
Explanation: Teratoma (Dermoid cyst)