Which of the Following Statement Is Not True of Surround

Multiple Choice

Which of the following statement is not true of surround inhibition in the retina?

A) surround inhibition helps to localize visual stimuli, similar to how lateral inhibition in the somatosensory system localizes tactile stimulus
B) surround inhibition is conducted via horizontal cells which are excited by cone cells
C) surround inhibition is only necessary for on-center bipolar cells
D) surround inhibition is conducted via horizontal cells which are inhibited by cone cells
E) all of the above