Which Statement Best Represents a Proximate Explanation for Bright Plumage

Which statement best represents a proximate explanation for bright plumage (or the choice of bright males) ?

A) Females that mate with brightly colored males produce more viable offspring relative to those that mate with dull males.
B) Males acquire brightly colored plumage by feeding on carotenoid-based foods.
C) Males with bright plumage experience higher reproductive success than males with dull plumage.
D) Males with dull plumage are less conspicuous to predators than bright males.
E) Females prefer brightly colored males because they receive direct or indirect benefits from doing so.