This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and Health, Subject name: Social & Preventive Medicine
[{'content': 'Mosquito net hole diameter is- \nSelect and explain. \nA. 0.02 inch, B. 0.0475 inch, C. 0.5 inch, D. 0.1 inch', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 0.0475 inch o The best pattern of mosquito net is the rectangular net.o There should not be a single rent in the net.o The Size of openings in the net is of utmost importance, the size should not exceed 0.0475 inch in any diameter.o The number of holes in one square inch in usually 150.", 'role': 'assistant'}]