Two different types of chlorophyll are used by most plants for the following reason:

A) Two chlorophylls allow for absorbing light from a larger portion of the light spectrum.
B) The different chorophylls are used in different parts of the photosynthesis process.
C) One type is used in photosystem I and the other in phototsystem II.
D) The different chlorophylls are located in different compartments of the chloroplast.
E) It is not know why there are two different chlorophylls.