This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
[{'content': 'What is the maximum permissible limit of daily exposure to noise level without causing damage to hearing? \nSelect and explain. \nA. 80 dB, B. 85 dB, C. 90 dB, D. 95 dB', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Exposure to noise above 160 dB cause ruptures of the tympanic membrane. dB is unit of intensity of sound. For frequency unit is Hz Ref : Park 23rd edition Pgno : 742', 'role': 'assistant'}]