Which of the Following Statements Is True About the Movement

Which of the following statements is true about the movement of the cupula in the ampullae of the semicircular canals?

A) Allows the brain to perceive linear acceleration
B) Allows the ears to hear sounds
C) Produces sound
D) Stimulates hair cells, alerting the brain to a change in body position with respect to gravity
E) Stimulates hair cells, alerting the brain to rotational movements