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
Which of the following binds to viral envelope glycoprotein preventing the conformational changes required for the fusion of viral and cellular membranes ? 
Select and explain. 
A. Abacavir, B. Indinavir, C. Enfuvirtide, D. Oseltamivir
C: Enfuvirtide
Answer: C: Enfuvirtide 
Explanation: None