Why Is It That There Is LESS Variation Among Individuals

Multiple Choice

Why is it that there is LESS variation among individuals in any one non-African population than among individuals in the contemporary African population?

A) Because the individuals that left Africa were a relatively small sample of the total amount of variation present.
B) Because the individuals that left Africa exhibited a greater number of mutations than the African population.
C) Because the African population was larger than the populations that left, and they had more mutation.
D) None of the answer options is correct.