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: Microbiology
[{'content': "Chandler's index of 250 - 300 eggs / gm of stool indicate \nSelect and explain. \nA. Potential danger, B. Minor public health program, C. Important public health program, D. Not of much significance", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Below 200 - not of much significance\n200 - 250 - potential danger\n250 - 300 - Minor public health problem\nAbove 300 - Important public health problem.', 'role': 'assistant'}]