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': 'About epidemiology of AIDS all are true except \nSelect and explain. \nA. Maternofetal transmission is the most common mode of transmission, B. In India it is mainly caused by HIV-1, C. I.V. drug abuse increases the risk, D. Medical personnel are at higher risk of getting infection with HIV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]