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': 'Presbycusis is - \nSelect and explain. \nA. Loss of accommodation power, B. Hearing loss due to ageing, C. Noise induced hearing loss, D. Congenital deafness', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It is mid to late adult onset, bilateral, progressive sensorineural hearing loss, where underlying causes have been excluded.', 'role': 'assistant'}]