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
Otoacoustic emission arises from which of the cochlear structures? 
Select and explain. 
A. Inner hair cell, B. Outer hair cell, C. Riesser's membrane, D. Organ of otolith
B: Outer hair cell
Answer: B: Outer hair cell 
Explanation: 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.