This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Pharmacology), Subject name: Pharmacology
[{'content': 'Which is a protease inhibitor? \nSelect and explain. \nA. Azothymidine, B. Zidovudine, C. Squanavir, D. Acyclovir', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (C) Squanavir', 'role': 'assistant'}]