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': 'Recommended duration of surveillance after completion of treatment of multibacillary leprosy? \nSelect and explain. \nA. 6 months, B. 1 year, C. 2 years, D. 5 years', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., 5 years", 'role': 'assistant'}]