A Square That Appears Light When Surrounded by a Black

A square that appears light when surrounded by a black border can be made to appear dark merely by increasing the brightness of the surround. This suggests that the visual cortex

A) receives action potentials that convey information about luminance from the entire visual field.
B) receives action potentials only from cells at the edges of the square.
C) identifies the absolute levels of brightness in an image.
D) responds to the periphery more than to the center of the visual field.
E) receives information about color through the periphery of the visual field.