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': 'SET centres are established if prevalence leprosy Is - \nSelect and explain. \nA. 0.5- 1/1000, B. 5-Jan, C. 10-May, D. 10', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 1-5", 'role': 'assistant'}]