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': "Otoacoustic emission arises from which of the cochlear structures? \nSelect and explain. \nA. Inner hair cell, B. Outer hair cell, C. Riesser's membrane, D. Organ of otolith", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Otoacoustic emissions are low intensity sounds produced by outer hair cells of a normal cochlea and can be elicited by a very sensitive microphone placed in the external ear canal and an analysis by a computer.', 'role': 'assistant'}]