When we view cars parked in a distant parking lot,we know that the cars are not actually the size of toy cars.What is illustrated by this example

A)  visual disparity
B)  perceptual constancy 
C)  perceptual illusion
D)  visual theory

Perceptual Constancy

The ability of the perceptual system to recognize objects as having consistent shape, size, and color despite changes in perspective, distance, or lighting.

Visual Disparity

The difference in the images received by the two eyes, which contributes to the perception of depth.