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
Which of the following will be optimum treatment in a patient of chronic hepatitis B whose serum AST levels are raised - 
Select and explain. 
A. Lamivudine, B. Lamivudine + interferons, C. Immunoglobulins, D. Interferons
A: Lamivudine
Answer: A: Lamivudine 
Explanation: Ans. is 'a' i.e., Lamivudine Treatment of acute hepatitis o Hepatitis B --> No treatment is required o Hepatitis C --> Pegylated Interferon (PEG - IFN) + ribavirin Treatment of chronic hepatitis o Hepatitis B --> Lamivudin, entecavir (preferred) or interferon o Hepatitis C --> Pegylated Interferon (PEG - IFN), entecavir plus ribavirin