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: Microbiology
[{'content': 'Mother to child transmission of HIV ? \nSelect and explain. \nA. 25%, B. 50%, C. 60%, D. 75%', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 25% . Probability of transmission of HIV from mother to infant/fetus ranges from 15 to 25% in industrialized countries and from 25 to 35% in developing countries.", 'role': 'assistant'}]