This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy: General Principles, Subject name: Pharmacology
[{'content': 'All of the following drugs are useful in swine flu except \nSelect and explain. \nA. Oseltamivir, B. Peramivir, C. Zanamivir, D. Abacavir', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (D) Abacavir(Ref: Harrison 19th/e p1214: Goodman Gilman 12th/e p1609, 1615; Katzung 12th/e p886, 887; KDT 8th/e p861)Abacavir is a NRTI used for HIV whereas all other drugs are given in the options are drugs used for bird flu and swine flu.', 'role': 'assistant'}]