Which of the following includes the most likely change in the coloration of the beetle population after pollution and a correct rationale for the change?
- A The coloration range shifted toward more light-colored beetles, as in diagram I. The pollution helped the predators find the darkened tree trunks.
- B The coloration in the population split into two extremes, as in diagram II. Both the lighter-colored and the darker-colored beetles were able to hide on the darker tree trunks.
- C The coloration range became narrower, as in diagram III. The predators selected beetles at the color extremes.
- D The coloration in the population shifted toward more darker-colored beetles, as in diagram IV. The lighter-colored beetles were found more easily by the predators than were the darker-colored beetles.
