In the figure shown, picture a light bulb with a tiny filament is placed exactly at corner A of the pyramid. Suppose that only 1/13 of the light that emerges from the filament is received by the pyramid. The fractions of the total light from the bulb that passes through (or crosses) each of the faces ADE, AEB, ACB, and ADC ar 1/13, 1/13, 1/13, and 1/13 0, 0, 0, and 0. 1/52, 1/52, 1/52, and 1/52