Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: Inhibits the integrase of HIV the: 
 Options:  <1> Efavirenz. <2> Tenofovir <3> Ritonavir <4> Emtricitabine. <5> Raltegravir
