Neighborhood Children Always Left Their Self-Reproducing Multicolored Bean Collection Unprotected

Neighborhood children always left their self-reproducing multicolored bean collection unprotected and scattered on the sidewalk after play. One day, bean-eating birds invaded their neighborhood looking for food. Which beans have a 'selective advantage?

A) Beans whose color matches the sidewalk.
B) New types of beans arising from random mutation.
C) Beans with gene flow or drift.
D) The bean population's total color variation.
E) Brightly colored beans.