Which of the Following Is True Concerning Lighting for Shade

Which of the following is true concerning lighting for shade taking?

A) Fluorescent lights emit more yellow light and incandescent lights emit more blue light.
B) A natural east light is considered a good light for shade taking.
C) Early morning and late afternoon light contains more yellow and orange light and less green and blue.
D) The bright light from the dental unit will tend to decrease the perceived brightness of the shade and increase the color intensity.