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': 'Which of the following is true leprosy statement about \nSelect and explain. \nA. Two plus (2+) indicates 2 different site, B. Paucibacillary leprosy bacterial index is less than 2, C. 7 sites are needed, D. Various sites needed', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]