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
Which is the most common testicular tumor in patients older than 60 years? 
Select and explain. 
A. Seminoma, B. Leydig cell tumor, C. Teratoma, D. Lymphoma
D: Lymphoma
Answer: D: Lymphoma 
Explanation: Testicular lymphoma is the most common testicular tumor in patients older than 60 years.