Which of the Following Statements Related to "ON Pathways" and "OFF

Which of the following statements related to "ON pathways" and "OFF pathways" of visual pathways to the brain is correct?

A) In the ON pathway bipolar cells fire action potentials only when bright light strikes the photoreceptors linked to them
B) In the OFF pathway bipolar cells fire action potentials when the photoreceptors linked to them are struck by bright light
C) The functional benefit of the coexistence of both pathways in the retina is to increase the brain's ability to perceive contrast at the edges and borders of the visual field
D) Both in the ON pathway bipolar cells fire action potentials only when bright light strikes the photoreceptors linked to them and the functional benefit of the coexistence of both pathways in the retina is to increase the brain's ability to perceive contrast at the edges and borders of the visual field are correct
E) Both in the OFF pathway bipolar cells fire action potentials when the photoreceptors linked to them are struck by bright light and the functional benefit of the coexistence of both pathways in the retina is to increase the brain's ability to perceive contrast at the edges and borders of the visual field are correct