Why Do Leaves Change Color in the Fall

Why do leaves change color in the fall?

A) The green chlorophyll that was masking the colors of the other pigments breaks down.
B) By fall,plants have used up all the green chlorophyll that was stored in their roots.
C) Plants replace green chlorophyll with pigments that gather all wavelengths of light.
D) The leaves produce bright-colored pigments to attract animals to their ripe fruit and seeds.
E) Red and yellow pigments are needed to prevent the leaves from freezing in cold weather.