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: Surgery
Testicular tumor with best prognosis is 
Select and explain. 
A. Teratoma, B. Seminoma, C. Yolk sac tumor, D. Sertoli cell tumor
B: Seminoma
Answer: B: Seminoma 
Explanation: Seminomas are radiosensitive tumors so prognosis is good.