Physiological Support for Opponent Color Representation Comes From

Multiple Choice

Physiological support for opponent color representation comes from:

A) the discovery of two types of cones in the fish retina that responded in similar ways to different wavelengths.
B) the observation that people sorted a stack of cards into four piles of colors, rather than three.
C) measurements of neurons in the ventral geniculate nucleus of rats that responded to color in an opponent fashion.
D) confirmation of the existence of neural circuits involved in the opponent color representation process.