Two islands are found in the middle of the Pacific Ocean, isolated from any other land mass. These two islands were at one time connected by a land bridge and are of recent origin. They have identical plant and animal life and are separated by 50 miles of ocean. Assuming different selection pressures, which of these island populations would be most likely to be impacted by reproductive isolation on these islands:

A. Dandelions, with airborne seedsB. Coconuts with floating seedsC. Birds
D. ButterfliesE. Mice