Which is the best example of organisms that have been naturally selected?

A) Dark-Colored peppered moths on soot-covered tree bark during the Industrial Revolution in England
B) Light-Colored peppered moths on soot-covered tree bark during the Industrial Revolution in England
C) Both light colored and dark colored peppered moths on light-colored tree bark before the Industrial Revolution in England
D) Neither dark-colored nor light-colored peppered moths on light-colored tree bark before the Industrial Revolution in England