An Observer Views Two Complex Scenes: Scene One Is Illuminated

Essay

An observer views two complex scenes: Scene one is illuminated by a blue light,and scene two is illuminated by a yellow light.As a result,a yellow surface in the first scene and a blue surface in the second scene each now have identical flat spectral power distributions of reflected light.
(A)What is the perceived color of each surface described within each scene? (B)If each scene is covered up so that only the blue or yellow surface is visible,how does the perceived color change?