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: Unknown
[{'content': 'According to WHO leprosy is a public health problem if prevalence is more than: \nSelect and explain. \nA. 0.10%, B. 0.01%, C. 0.50%, D. 1%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: At the end 2000, leprosy was a public health problem in 10 countries (prevalence rate > 1/10,000), mainly in Africa, Asia and Latin America. Thus to call it a public health problem prevalence per 10,000 should be more than 1 and per 100 should be > 0.01.', 'role': 'assistant'}]