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: Pathology
Commonest infantile testicular tumour is ? 
Select and explain. 
A. Seminoma, B. Teratoma, C. Yolk sac tumor, D. Dysgerminoma
C: Yolk sac tumor
Answer: C: Yolk sac tumor 
Explanation: Ans. is 'c' i.e., Yolk sac tumoro Most common tumor of testis Seminoma.o Most common tumor of testis in childhood ---> yolk sac tumor (endodermal sinus tumor or infantile embryonal carcinoma).