In the Müller-Lyer Visual Illusion, a Line with Two Open-Angle

In the Müller-Lyer visual illusion, a line with two open-angle ends appears longer than a line with two closed-angle arrowhead ends, even though the lines are in fact the same length. This illusion is more common in cultures:

A) where carpentry is prominent, due to the prevalence of right angles.
B) where people are highly mobile, due to exposure to differing environments.
C) where there are many deserts, due to the frequency of rounded lines.
D) where archery is a common mode of hunting and defense, due to the prevalence of arrowheads.