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': 'Exposure to noise above--causes permanent loss of hearing: \nSelect and explain. \nA. 85 dB, B. 90 dB, C. 100 dB, D. 160 dB', 'role': 'user'}, {'content': 'Answer: D \nExplanation: 160 dB', 'role': 'assistant'}]