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': 'Zidovudine and didanosine used in HAART act by : \nSelect and explain. \nA. Inhibitory effects on viral DNA, B. Nucleoside reverse transcriptase inhibition, C. Inhibit the synthesis of gp41, D. Protease inhibition', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]