Stewart Is Sitting in His Office,which Is Lit with a Bluish

Multiple Choice

Stewart is sitting in his office,which is lit with a bluish neon light,eating a red apple.Even though the apple is bathed in bluish light,he continues to perceive it as red.This illustrates

A) the trichromatic theory.
B) colour continuity.
C) the opponent-process theory.
D) colour constancy.