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 integrase inhibitor is ? \nSelect and explain. \nA. Elvitegravir, B. Abacavir, C. Maraviroc, D. Tenofovir', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Elvitegravir Integrase inhibitors Raltegravir and Elvitegravir act by inhibiting enzyme integrase.", 'role': 'assistant'}]