This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Medicine
[{'content': 'Rx of chronic HBV infection - \nSelect and explain. \nA. Interferon, B. Adefovir dipivoxil, C. Lamivudine, D. Famcyclovir', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p>Davidson&;s principles and practice of medicine 22nd edition. *interferon alpha is most effective in persons with low viral load and serum transaminase greater than raise the upper limit of normal. #lamivudine although effective ,long term therapy is complicated.</p>', 'role': 'assistant'}]