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
Tzank smear helps in the diagnosis of : 
Select and explain. 
A. Herpes viral infection, B. Bullous pemphigoids, C. Carcinoma of cervix, D. None
A: Herpes viral infection
Answer: A: Herpes viral infection 
Explanation: A. i.e. Herpes