Sibling Species Are Represented by

Sibling species are represented by

A) two species that look very much alike but are actually distantly related.
B) offspring that have the same parents but can no longer interbreed.
C) the two halves of a population that have been split by a vicariant event but could still interbreed if sympatric.
D) species that appear essentially identical in phenotype but have evolved differences in behavior or chemistry that prevent mating.
E) a collection of specimens that are similar but have not yet undergone any test of interbreeding to determine if they are truly separate species.