Which of the following are examples of genetic drift?

A. The flies that have bright orange coloring have been eaten more often by birds, resulting in only brown flies
reproducing.
B. population of birds starts to have only offspring with longer wings by chance.
C. Only the deer faster than wolves in a certain population have been able to reproduce.
D. Antelope that have striped coloring in a certain population have been able to reproduce more often because they have not been caught as much by
predators.
E. Randomly, a small population of monkeys began to only have short tails.