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': 'Efavirenz is used for treatment of HIV infections. It acts \nSelect and explain. \nA. As protease inhibitor, B. As reverse transcriptase inhibitor, C. As integrase inhibitor, D. By inhibiting the HIV entry into the cell', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]