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: Pathology
Presence of Epstein Barr virus in hairy Leukoplakia can be demonstrated using following methods EXCEPT - 
Select and explain. 
A. Tzanck smear, B. Polymerase chain reaction, C. In situ hybridization, D. Electron microscopy
A: Tzanck smear
Answer: A: Tzanck smear 
Explanation: None