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
The antiretroviral drug which is also effective in chronic active hepatitis–B infection is : 
Select and explain. 
A. Zidovudine, B. Nelfinavir, C. Efavirenz, D. Lamivudine
D: Lamivudine
Answer: D: Lamivudine 
Explanation: None