<prompt> 3-year-old Rajan is having sensorineural deafness, not benefited by hearing aids. Next best management is:Cochlear implantStapes fixationStapedectomyFenestration  <response>: a Cochlear implantRef. Cummings, 6th ed., 2434Stapedectomy is done for otosclerosis.Fenestration operation used to be done previously for otosclerosis, though stapedotomy is done these days.Stapes fixation is no surgery 