Which of the following statements about genetic drift is true?

A) Inbreeding depression, bottleneck effects, and founder effects are all examples of genetic drift.
B) The effect of genetic drift on allele frequencies is equally strong in large and small populations.
C) Genetic drift can lead to an increase in the average fitness of a population.
D) Genetic drift is nonrandom.
E) Genetic drift is caused by migration of individuals into, and out of, a population.