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': 'Which of the following binds to viral envelope glycoprotein preventing the conformational changes required for the fusion of viral and cellular membranes ? \nSelect and explain. \nA. Abacavir, B. Indinavir, C. Enfuvirtide, D. Oseltamivir', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]