Which of the Following Statements Best Describes the Function of the Chordae

Which of the following statements best describes the function of the chordae tendineae?

A) They pull downward on the valve cusps, thereby preventing the AV valves from being pushed into the atria (prolapsing) .
B) They open and close the AV valve due to the movement of the papillary muscle during contraction.
C) The chordae tendineae generate autorhythmicity within the heart.
D) The chordae tendineae act like a parachute and capture blood as it enters the right ventricle.
E) When the heart contracts, the chordate tendineae separate the flow of blood from the right and left sides of the heart.