A light bulb's brightness is reduced when placed behind a screen. The amount of visible light produced by the light bulb decreases by 25% with each additional layer that is added to the screen. With no screen, the light bulb produces 750 lumens. The lumen is a unit for measuring the total quantity of visible light emitted by a source. Select the correct equation that can be used to represent the lumens, L, after x screen layers are added.
A. L = 750(1.25)x B. L = 750(0.25)x C. L = 750(0.75)x D. L = 750(0.975)x