The Muller-Lyer Illusion Occurs When a Line Appears Longer When

The Muller-Lyer illusion occurs when a line appears longer when the V-shaped lines at its ends radiate outward. Cross cultural research on this illusion has found that:

A) people who live in non-Western cultures are more affected by the illusion.
B) the effect of the illusion is essentially the same in all cultures studied so far.
C) people who live in Western cultures with square shapes and many corners are less affected by the illusion.
D) people who live in non-Western cultures are less affected by the illusion.