Thousands of years ago, a large flock of hawks was driven from its normal migratory route by a severe storm. The birds scattered and found shelter on two distant islands, as shown on the map below. The environment of island A is very similar to the hawk's original nesting region. The environment of island B is very different from that of island A. The hawks have survived on these islands to the present day with no migration between the populations. Which statement most accurately predicts the present-day condition of these island hawk populations?

A) The hawks that landed on island B have evolved more than those on island A.
B) The hawks that landed on island A have evolved more than those on island B.
C) The populations on islands A and B have undergone identical mutations.
D) The hawks on island A have given rise to many new species.