Inner hair cells in the cochlea transduce the perception of sound, but loss of outer hair cells would greatly impair hearing. Select all the reasons why (there’s more than one answer): A. outer hair cells supply trophic support to inner hair cells
B. there is a sharpening of the tuning curve when outer hair cells are dead
C. there is a sharpening of the tuning curve when outer hair cells are alive
D. outer hair cells are little mechanical amplifiers that smooth out the movement of the basilar membrane
E. outer hair cells are a little mechanical amplifiers that increase the movement of the basilar membrane