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 in pregnancy is: 
Select and explain. 
A. Mucinous cyst adenoma, B. Dermoid cyst, C. Metastasis, D. Dysgerminoma
B: Dermoid cyst
Answer: B: Dermoid cyst 
Explanation: None