The Pathway Leading to the Perception of Sound by Mammals

The pathway leading to the perception of sound by mammals begins with the

A) hair cells of the organ of Corti,which rests on the basilar membrane,coming in contact with the tectorial membrane.
B) hair cells of the organ of Corti,which rests on the tympanic membrane,coming in contact with the tectorial membrane.
C) hair cells of the organ of Corti,which rests on the tectorial membrane,coming in contact with the basilar membrane.
D) hair cells of the organ of Corti coming in contact with the tectorial membrane as a result of fluid waves in the cochlea causing vibrations in the round window.
E) hair cells on the tympanic membrane as a result of fluid waves in the cochlea causing vibrations in the round window.