This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hearing Loss, Subject name: ENT
3-year-old Rajan is having sensorineural deafness, not benefited by hearing aids. Next best management is: 
Select and explain. 
A. Cochlear implant, B. Stapes fixation, C. Stapedectomy, D. Fenestration
A: Cochlear implant
Answer: A: Cochlear implant 
Explanation: (a) Cochlear implant(Ref. Cummings, 6th ed., 2434)Stapedectomy is done for otosclerosis.Fenestration operation used to be done previously for otosclerosis, though stapedotomy is done these days.Stapes fixation is no surgery