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
The drug eirenz inhibits? 
Select and explain. 
A. HIV 1 Protease, B. HIV 1 reverse transcriptase, C. HIV1 Integrase, D. HIV entry into cell
B: HIV 1 reverse transcriptase
Answer: B: HIV 1 reverse transcriptase 
Explanation: Ans is 'b' i.e. HIV1 reverse transcriptase Eirenz is a non-nucleoside reverse transcriptase inhibitor.