This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
What is true regarding organ of coi? 
Select and explain. 
A. The organ of Coi is contained within the scala media, B. Endolymph is secreted by cells of the stria vascularis, C. The whole organ of Coi rests on the basilar membrane, D. All
D: All
Answer: D: All 
Explanation: The organ of Coi, or spiral organ, is the receptor organ for hearing and is located in the mammalian cochlea. This highly varied strip of epithelial cells allows for transduction of auditory signals into nerve impulses' action potential. Ref ganong's review of medical physiology 25e