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: Skin
[{'content': 'Tzank smear helps in the diagnosis of : \nSelect and explain. \nA. Herpes viral infection, B. Bullous pemphigoids, C. Carcinoma of cervix, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A. i.e. Herpes', 'role': 'assistant'}]