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: ENT
[{'content': 'At which level sound is painful - \nSelect and explain. \nA. 100-120dB, B. 80-85dB, C. 60-65dB, D. 20-25dB', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Intensity\n\nWhisper - 30 dB\nNormal conversation - 60 dB\nShout - 90 dB\nDiscomfort of ear - 120 dB\nPain in ear\xa0-130 dB\n\nRef. Dhingra, 6/e, p 19', 'role': 'assistant'}]