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: Medicine
Child with kidney transplant developed lympho-proliferative cancer. This is due to which viral infection - 
Select and explain. 
A. CMV, B. Varicella, C. HPV, D. EBV
D: EBV
Answer: D: EBV 
Explanation: None