This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Bacterial Index deals with \nSelect and explain. \nA. Tuberculosis, B. Leprosy, C. Syphilis, D. Gonorrhea', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In leprosy, Bacterial Index is the only objective way of monitoring the benefit of treatment. 0 No bacilli in any of 100 oil immersion fields1+ 1-10 in 1002+ 1-10 in 103+ 1-10 in each field4+ 10-1005+ 100-10006+ more than 1000It is calculated for each site examined an average is taken.Park 23e pg: 314', 'role': 'assistant'}]