Which of the Following Statements Is True Regarding Earthquakes

Which of the following statements is true regarding earthquakes?

A) All of the answers listed here.
B) They represent the sudden release of energy that has accumulated within rocks.
C) They form when brittle rocks exceed their elastic limit.
D) They represent the vibrations that occur as seismic waves travel through rocks.
E) They result in rocks being offset or displaced along faults.