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: Unknown
Which of the following germ cell tumor is malignant? 
Select and explain. 
A. Leydig cell tumor, B. Mature teratoma, C. Seminoma, D. Dermoid cyst
C: Seminoma
Answer: C: Seminoma 
Explanation: Ans. is 'c' i.e., Seminoma Germ cell tumorsa)Malignant - Germinoma (seminoma, dysgerminoma), embryonal carcinoma, endodermal sinus tumor (yolk sac tumor), choriocarcinoma, immature teratoma.b)Benign - Mature teratoma, dermoid cyst.o Leydig cell tumor is not a germ cell tumor.