Which statement about natural selection on early Earth is correct?
A. Natural selection could only act on populations of living organisms that had DNA as their genetic material.
B. Natural selection could act on a population of proto-cells on early Earth, selecting for those that were stable and had self-replicating, catalytic RNA that allowed them to grow and divide to produce similar daughter proto-cells.
C. Natural selection acted on populations of proto-cells on early Earth in order to make them more like modern living cells that have DNA as their genetic material.
