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: Medicine
[{'content': 'HIV seroconversion ratio after needle-stick is? \nSelect and explain. \nA. Less than 1 in 3000, B. Lessthan 1 in 300, C. Less than 3 in 1000, D. Less than 3 in 100', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Less than 3 in 1000 REF: The ICU book Paul L. Marino, Kenneth M. Sutin - Page 55 A single needle-stick injury with blood from an HIV-infected patient carries an average 0.3% (3 in 1000) risk of HIV seroconversion', 'role': 'assistant'}]