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: Pharmacology
Drug of choice in herpes simplex encephalitis is ? 
Select and explain. 
A. Acyclovir, B. Vidarabine, C. Interferon, D. Amantadine
A: Acyclovir
Answer: A: Acyclovir 
Explanation: Ans. is 'a' i.e., Acyclovir