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: ENT
[{'content': 'A man presents with vesicles over external acoustic meatus with ipsilateral facial palsy of LMN type.The cause is - \nSelect and explain. \nA. Herpes zoster, B. Herpes simplex virus-I, C. Varicella, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]