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
[{'content': 'Which of the following antiviral drug has a dual antiviral activity that is against HBV and HIV? \nSelect and explain. \nA. Saquinavir, B. Abacavir, C. Emtricitabine, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Emtricitabine (FTC) \u200b\nEmtricitabine, a fluoro derivative of lamivudine, inhibits both HIV and HBV.\u200b\nReference: Lippincott Illustrated Reviews: Pharmacology Wolters Kluwer Sixth Edition page no 577\u200b', 'role': 'assistant'}]