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': 'National Leprosy Eradication Programme was started in – \nSelect and explain. \nA. 1949, B. 1955, C. 1973, D. 1983', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]