Hummingbirds Are Important Pollinators

Hummingbirds are important pollinators.They are attracted to the color red.Red flowers have evolved in many different plants that are not closely related, all of which are pollinated by hummingbirds.What does this example of coevolution suggest about the importance of color in pollination?

A) Red is necessary for pollination to occur.
B) Animal pollinators must be able to see color.
C) Bright colors are necessary for pollination to occur.
D) Color is important, but not essential, for pollination.
E) Color ensures that the pollinator makes repeat visits to the flower.