According to the Place Theory of Pitch Perception,how Do Sound

According to the place theory of pitch perception,how do sound waves affect the basilar membrane?

A) High-frequency tones stiffen the membrane;low-frequency tones relax the membrane.
B) High-frequency tones relax the membrane;low-frequency tones stiffen the membrane.
C) High-frequency tones produce maximum movement at the base;low-frequency tones produce maximum movement near the apex.
D) High-frequency tones produce maximum movement near the apex;low-frequency tones produce maximum movement at the base.