The Fact That We Experience the Color Green After Viewing

The fact that we experience the color green after viewing a red object would be taken as support for the

A) notion that the retina contains three types of photopigments.
B) importance of color mixing in the visual system.
C) opponent-process theory of color vision.
D) idea that the visual system performs an algebraic summation of lights to generate a color perception.
E) trichromatic theory of color vision.