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': "A Chandler's index of 312 is considered as: \nSelect and explain. \nA. The infection is not of much significance, B. Minor public health problem, C. Potential danger, D. Impoant public health problem", 'role': 'user'}, {'content': "Answer: D \nExplanation: Chandler's index: It is the average number of hookworm eggs per gram of faeces for an entire community. Chandler's index < 200 = Hookworm infection is not of much significance Chandler's index 200 - 250 = May be regarded as a potential danger Chandler's index 250 - 300= Minor public health problem Chandler's index >350 = Impoant public health problem Ref: Park, 17 Edition, Page 186", 'role': 'assistant'}]