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: Surgery
[{'content': 'The HIV virus can be transmitted by the following routes, except - \nSelect and explain. \nA. Homosexual contact, B. Intact skin, C. Maternofoetal, D. Needle prick', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]