What Best Describes How the Behavior of Rocks Changes When

Multiple Choice

What best describes how the behavior of rocks changes when they become deeply buried and placed under high levels of heat and pressure?

A) They become ductile and deform plastically.
B) They become brittle and deform by fracturing.
C) They become harder and develop gravity fractures.
D) They become more resistant to deformation.
E) They begin to transform into metallic minerals.