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': 'The first country in the South East Asian Region (SEAR) to report AIDS was \nSelect and explain. \nA. Sri Lanka, B. India, C. Bangladesh, D. Thailand', 'role': 'user'}, {'content': 'Answer: D \nExplanation: First case of HIV reported:\n\nUSA: 1981\nThailand: 1984\nIndia: 1986\nSri Lanka: 1987\nBangladesh: 1989', 'role': 'assistant'}]