This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Physiology of Ear, Subject name: ENT
[{'content': 'Maximum audible tolerance is? (As per factory Act) \nSelect and explain. \nA. 90 db for 6 hours, B. 90 db for 8 hours, C. 85 db for 6 hours, D. 85 db for 8 hours', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) 90 db for 8 hoursREF: Dhingras 3rd ed page 46According to ministry of labour government of IndiaA noise of 90 db, 8 hrs a day for 5 days per week is maximum safe limit.No exposure in excess of 115 db is permittedNo impulse noise of intensity greater than 140 db is permitted.Persons working in area where noise exceeds 85 db should have pre employment and annual audiogramsEar plugs offer protection upto 35 db and to be used where noise exceeds 85 db', 'role': 'assistant'}]