This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
Which of the following drug is effective against HIV with Y181C mutation? 
Select and explain. 
A. Festinavir, B. Lersivirine, C. Elvitegravir, D. Dolutegravir
B: Lersivirine
Answer: B: Lersivirine 
Explanation: Festinavir is an NI shown to be effective in adefovir and tenofovir resistanceLersivirine is an NNI effective against HIV with Y181C mutationElvitegravir is an integrase inhibitor used for initial / naive treatmentDolutegravir is an integrase inhibitor approved for raltegravir-resistant infections