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': 'Integrase inhibitors approved for HIV is: \nSelect and explain. \nA. Raltegravir, B. Indinavir, C. Lopinavir, D. Elvitegravir', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Raltegravir o Raltegravir is an integrase inhibitor which is used in combination with other antiretroviral agents in treatment of patients with ongoing HIV-1 replicaiton. o Elvitegravir is also an integrase inhibitor. But it is in phase-3 trial (not approved).", 'role': 'assistant'}]