On Planet X, Some Areas Receive Very Little Ultraviolet Radiation

Multiple Choice

On Planet X, some areas receive very little ultraviolet radiation (UVR) .What skin color would you expect the people of Planet X to have if they live in those areas?

A) always light
B) always dark
C) light unless their diet contains a lot of Vitamin D
D) dark unless their diet contains a lot of Vitamin D
E) light unless their diet contains a lot of Vitamin A