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
[{'content': 'Most common viral infection after Kidney Transplantation is: \nSelect and explain. \nA. EBV, B. HSV, C. CMV, D. HBV', 'role': 'user'}, {'content': "Answer: C \nExplanation: Answer is C (CMV): CMV is the most common viral infection after Kidney Transplantation. 'CMV is the single most impoant viral infection in renal transplant recipients'- Critical Care Nephrology", 'role': 'assistant'}]