Which Feature Allows Certain Lipid Molecules to Be Used as Colorful

Which feature allows certain lipid molecules to be used as colorful pigments in plants and animals?

A) Their high oxygen content helps electrons circulate, which allows absorption of visible light.
B) Their conjugated bond structures allow absorption of visible light.
C) Their four-fused ring structure allows visible light reflection.
D) Their hydrophobicity bends light around them.
E) Their low specific gravities cause light to reflect from their surfaces.