Which Is FALSE About the Theories of Color Vision

Which is FALSE about the theories of color vision?

A) Trichromatic theory applies near the beginning of visual processing (in the eye) .
B) The fact that certain colors can't be blended disproves the opponent process theory.
C) Color blindness supports the trichromatic theory of color vision.
D) Opponent process theory applies near the end of visual processing (in the brain) .