Swinging flashlight test for Marcus-Gunn pupil

(A) In bright light, each eye perceives the same amount of light on average. As such, the pupils are equal in size.
(B) When the light is shone in the unaffected eye, it constricts normally.
(C) When the light is swung from the unaffected eye and shone in the affected eye, it perceives less light and both pupils paradoxically dilate.