Ocean water transmits light mostly in the blue-green region of the spectrum. Algae have the same photosynthetic pigments as higher plants as shown in the figure but vary in their accessory pigments. Which of the following statements BEST explains why red algae are abundant at greater depths of water in the ocean?

A. Red algae have red accessory pigments that absorb in the blue-green region of the spectrum.

B. Red algae have red accessory pigments that absorb the small amount of red light present at lower depths.

C. Red algae have red accessory pigments that reflect blue-green light, which is abundant at lower depths.

D. Red algae are red to avoid predators because they are not visible if there is no red light.

B. Red algae have red accessory pigments that absorb the small amount of red light present at lower depths.