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
An electrode of a cochlear implant is placed in 
Select and explain. 
A. Horizontal semicircular canal, B. Scala media, C. Scala tympani, D. Scala vestibule
C: Scala tympani
Answer: C: Scala tympani 
Explanation: Pas of the implant: External pa- Microphone, Speech processor, and Transmitter coilInternal pa- Receiver stimulator, Electrode arrayThe electrode array is inseed into the scala tympani by widening the round window (Cochleostomy)Ref: Hazarika; 3rd ed; Pg: 87