Identify a TRUE statement about hair cells inside the cochlea.

a. The largest hair cells are nearest the oval window.
b. Exposure to moderately loud noises over long periods of time is tolerated by the human ear because of the presence of hair cells.
c. The smallest hair cells are located in the coiled-up center part of the cochlea.
d. Damage to the hair cells in the inner ear due to loud noises causes irreparable hearing loss.