In the Ames Room, People Appear to Grow Larger or Smaller

Multiple Choice

In the Ames room, people appear to grow larger or smaller as they walk from one side of the room to the other because

A) retinal disparity occurs and causes motion parallax.
B) the room illustrates the reversibility of figure-ground objects.
C) accommodation cannot be maintained with movement by the people.
D) the observer's perceptual construction of the room is based on the assumption that the room is square.