When Most People Look at the Black-And-White Hermann Grid Illusion

When most people look at the black-and-white Hermann grid illusion,

A) they see other colors where there are none.
B) the inhibiting process causes them to see gray dots.
C) the boxes blur together and it is difficult to determine boundaries.
D) the black boxes are seen as white, and the white lines are seen as black.
E) they see two alternating patterns appear and disappear.