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': 'HIV strains resistant to which of the following drugs may show cross resistance to Abacavir? \nSelect and explain. \nA. Lamivudine, B. Didanosine, C. Enfuviide, D. Raltegravir', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is'a'i.e.LamivudinelRef: KDT p.. 8081Resistance to abacavir develops slowly, and it exhibits little cross resistance with other NIs. Strains of HIV having resistance to zidovudine and lamivudine show cross resistance with abacavir.", 'role': 'assistant'}]