In sensorineural deafness: a. there is degeneration of nerve…

In sensorineural deafness: a. there is degeneration of nerve fibers, making the deafness permanent and irreversible.b. if the obstruction can be removed, hearing may be restored.c. a stapedectomy will improve some hearing loss but 90% patients still have limited hearing.d. various types of hearing aids will greatly improve hearing.