Photoreceptors in the Surround Portion of a Receptive Field Modify

Photoreceptors in the surround portion of a receptive field modify the light information received by photoreceptors in the center of the receptive field.They accomplish this by

A) firing action potentials onto the photoreceptors in the center.
B) modifying communication between the center photoreceptors and their bipolar cells through horizontal and amacrine cells.
C) reducing the communication between the center and the surround.
D) expanding communication to adjacent receptive fields.
E) blocking bipolar cell transmission to retinal ganglion cells.