According to the Ratio Principle of Lightness Constancy, the Perceived

Multiple Choice

According to the ratio principle of lightness constancy, the perceived lightness of a region is based on the:

A) relative intensity of the illuminating light.
B) absolute amount of light reflected from the region and its surround.
C) difference in color between the region and its surround.
D) relative amounts of light reflected from the region and its surround.