This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Viral, Subject name: Pharmacology
[{'content': 'Acyclovir is used in - \nSelect and explain. \nA. Herpes keratitis, B. CMV retinitis, C. HepatitisC, D. Hepatitis B', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Herpes keratitisAntiviral DrugIts UseAcyclovirHerpes Simplex Virus Varicella Zoster VimsGanciclovirCMV and HS VFoscamet (i.v.)CMVOseltamivir (oral)Influenza A & influenza BRibavirinChronic HCV (with IFN-?)LamivudineHIV. Chronic HBVEntecavirHBV resistant to lamivudine", 'role': 'assistant'}]