Which of the Following Has Been Suggested as a Cause

Multiple Choice

Which of the following has been suggested as a cause for the Ponzo illusion?

A) Linear perspective and height on the horizon cues tell the brain that the top line is closer than the bottom one.
B) A person's dominant eye projects a longer line image on its retina than does the weaker eye on its retina.
C) To maintain size constancy, the brain inflates our perception of the top line's length.
D) It's a cultural perception phenomenon that occurs only in societies with receding straight-line objects, such as railroad tracks.