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
[{'content': 'Which of the following drug is not active against Hepatitis B? \nSelect and explain. \nA. Interferon, B. Telbivudine, C. Zidovudine, D. Lamivudine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c. Zidovudine', 'role': 'assistant'}]