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 for Herpes simplex encephalitis is : 
Select and explain. 
A. 5–Hydroxy deoxyuridine (5–HU), B. Acyclovir, C. Gancyclovir, D. None of the above
B: Acyclovir
Answer: B: Acyclovir 
Explanation: None