According to the Ratio Principle

Multiple Choice

According to the ratio principle

A) lightness constancy will occur as long as the ratio of light reflected from a white surface and a black surface remain constant.
B) lightness constancy will occur if the ratio of light reflected from a white surface and a black surface increases as the overall light intensity increases.
C) lightness constancy will occur if the ratio of light reflected from a white surface and a black surface decreases as the overall light intensity increases.
D) lightness constancy can never occur.