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: Social & Preventive Medicine
[{'content': 'True about HIV epidemiology -a) Children rarely affectedb) < 10% of HIV infected person progress to AIDSc) Southern africa have 72% of total global burdend) Seminal secretion is more infectious than vaginal secretione) HIV cases can infect in the window period \nSelect and explain. \nA. bce, B. bde, C. acde, D. abde', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]