Which of the following statements is incorrect ?
A) The sun does not appear red during noon hours because the distance travelled by the sun rays in the atmosphere is less than that compared to morning and evening hours.
B) The sun appears red during sunrise and sunset because except red colour, all colours scatter more and vanish before they reach our eye.
C) Speed of light is constant in vacuum for all colours.
D) Speed of light is constant when it has passed through medium for all colotus.