This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: viral infection, Subject name: Medicine
Most common virus leading to post transplantation lymphoma is? 
Select and explain. 
A. EBV, B. CMV, C. Herpes, D. Aspergillus
A: EBV
Answer: A: EBV 
Explanation: MC virus leading to post transplantation lymphoma - EBV MC virus leading to Graft Failure in Post kidney transplantation - CMV