Which Aspect(s) of Natural Selection Is(are) Illustrated by the Figure

Which aspect(s) of natural selection is(are) illustrated by the figure below (21.2b) ? Check all that apply.

A) Variation must exist in the population.
B) Variation among individuals must be genetically transmissible to the next generation.
C) Variation among individuals leads to differences in lifetime reproductive success.
D) More individuals are produced each generation than the environment can support, resulting in competition for survival.