This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'All of the following drugs are protease inhibitors except \nSelect and explain. \nA. Nelfinavir, B. Saquinavir, C. Abacavir, D. Ritonavir', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Refer KDT 6/e p767 All protease inhibitors end with NAVIR like Nelfinavir, saquinavir, and Ritonavir Abacavir is an NI', 'role': 'assistant'}]