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: Microbiology
[{'content': 'Which of the following has malignant potential: \nSelect and explain. \nA. HSV -1, B. EBV, C. CMV, D. Varicella', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) EBV Ref. jawetz 25/e, p 592, 27/e, p 620 Already explained, refer Ans. 46', 'role': 'assistant'}]