White light passes through a diffraction grating and forms rainbow patterns on a screen behind the grating. For each rainbow, A. The red side is on the right, the violet side on the left.

B. The red side is on the left, the violet side on the right.

C. The red side is closest to the center of the screen, the violet side is farthest from the center.

D. The red side is farthest from the center of the screen, the violet side is closest to the center.