Which of the Following Is an Example of How Natural

Which of the following is an example of how natural selection is responsible for the variation seen in the human population?

A) Some Africans have a tall and skinny body that more readily dissipates heat than other body types.
B) Inuits in Greenland have a stockier body shape that is adapted to retain heat.
C) Africans carry the sickle trait in areas where malaria is prevalent.
D) People in the northern regions have less pigmentation, which allows more UV light to penetrate the skin to produce vitamin D.
E) All of these choices are correct.