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': "Testing of HLA-B' 5701 is recommended prior to initiation of this antiretroviral agent:- \nSelect and explain. \nA. Atazanavir, B. Nelfinavir, C. Raltegravir, D. Abacavir", 'role': 'user'}, {'content': "Answer: D \nExplanation: Testing of HLA-B' 5701 is recommended prior to initiation of abacavir. Abacavir if given in a patient who has HLA-B' 5701 causes high risk of MI.", 'role': 'assistant'}]