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: Medicine
With reference to the treatment of chronic Hepatitis B infection, consider the following drugs - 1. Lamivudine, 2. Alpha interferon, 3. Ribavirin, 4. Acyclovir. Which of the above drugs are useful in the treatment of chronic Hepatitis B infection ? 
Select and explain. 
A. 1 and 2 only, B. 1 and 3 only, C. 2 and 3 only, D. 1, 2, 3 and 4
A: 1 and 2 only
Answer: A: 1 and 2 only 
Explanation: None