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: These drugs act by Nucleoside reverse transcriptase inhibition', 'role': 'assistant'}]