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': 'Sero conversion in HIV Infection takes place in ? \nSelect and explain. \nA. 2 weeks, B. 4 weeks, C. 9 weeks, D. 12 weeks', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 4 weeks . The mean time to seroconversion after HIV infection is 3-4 weeks.", 'role': 'assistant'}]