Which of the following is the evidence for Darwin's theory of common descent?
A. There are patterns in the fossil record that suggest other species have diverged from a single ancestor species.
B. There are bio geographic patterns in the distribution of species, for instance distinct bird species on an island tend to resemble one another, suggesting a common ancestor.
C. There are common stages in the early embryological development of organisms representing several distinct vertebrate groups.
D. All of above
