This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Site where endolymph is seen 
Select and explain. 
A. Scala vestibule, B. Scala media, C. Helicotrema, D. Organ of coi
B: Scala media
Answer: B: Scala media 
Explanation: Endolymph fills the entire membranous labyrinth(scala media). Ref: Dhingra 6th edition pg no:10