This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-HIV Drugs, Subject name: Pharmacology
[{'content': 'Nucleoside reverse transcriptase inhibiting drug, which is a guanosine analogue is:- \nSelect and explain. \nA. Ritonavir, B. Zidovudine, C. Abacavir, D. Acyclovir', 'role': 'user'}, {'content': 'Answer: C \nExplanation: NI ANALOGUE OF Zidovudine Thymidine Stavudine Thymidine Lamivudine Cytosine Emtricitabine Cytosine Zalcitabine Cytosine Tenofovir Adenosine Didanosine Adenosine Abacavir Guanosine', 'role': 'assistant'}]