Which of these scenarios is an example of disruptive selection?
a) Darker colored morphs in a butterfly population are more adaptive than lighter colored morphs, and lighter colored morphs are eliminated from the population.
b) The dark and light color morphs of a butterfly population are maintained, and the intermediate gray morph has been eliminated from the population.
c) Intermediate gray morphs of a butterfly population are maintained, and the extreme dark and light color morphs have been eliminated.
d) A new, unique color form arises from a mutation in a population of butterflies.