This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Pathology
The incidence of bilaterally in a dermoid cyst is approximately 
Select and explain. 
A. 10 percnt, B. 30 percnt, C. 50 percnt, D. 70 percnt
A: 10 percnt
Answer: A: 10 percnt 
Explanation: Refer Robbins page no 1029 Germ cell tumor constitutes 15-20 percnt of all ovarian tumors Most are benign cystic teratoma, also known dermoid cyst