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
In cochlear implants, electrodes are most commonly placed at: 
Select and explain. 
A. Oval window, B. Round window, C. Horizontal semicircular canal, D. Cochlea
D: Cochlea
Answer: D: Cochlea 
Explanation: The inside component, the actual implant, has a coil to receive signals, electronics, and an array of electrodes which is placed into the cochlea, which stimulate the cochlear nerve