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': 'Vesicle in ear with facial nerve palsy on same side due to which infection: \nSelect and explain. \nA. CMV, B. VZV, C. EBV, D. HSV', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b. VZV', 'role': 'assistant'}]