The Frequency of a Sound Is Indicated to the Nervous

The frequency of a sound is indicated to the nervous system by the

A) frequency of hair cell vibration in the spiral organ.
B) number of rows of hair cells that are stimulated in the spiral organ.
C) region of the basilar membrane of the spiral organ that is stimulated.
D) movement of the perilymph in the cochlear duct.
E) frequency of vibration of the tectorial membrane of the spiral organ.