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': 'In the heterosexual trnsmission of HIV - \nSelect and explain. \nA. There is greater risk of transmission from man to woman, B. There is greater risk of transmission from woman to man, C. Risk is equal in either ways, D. HIV infection is not transmitted by heterosexual act', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e.There is greater risk of transmission from man to woman", 'role': 'assistant'}]