This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Testis & Scrotum, Subject name: Surgery
Which of the following testicular carcinoma is not germ cell tumor - 
Select and explain. 
A. Embryonal cell carcinoma, B. Teratoma, C. Choriocarcinoma, D. Gonadoblastoma
D: Gonadoblastoma
Answer: D: Gonadoblastoma 
Explanation: Ans. is 'd' i.e., Gonadoblastoma