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': 'Which of the following drug prevents the transmission of HIV from an infected pregnant mother to the child \nSelect and explain. \nA. Zidovudine, B. Lamivudine, C. Didanosine, D. All of the following', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Nevirapine and zidovudine are used to prevent vertical transmission of HIV from pregnant females to the baby', 'role': 'assistant'}]