Of the Following Four Islands at the Same Latitude,which One

Multiple Choice

Of the following four islands at the same latitude,which one likely possesses the fewest species?  

A) 1,000 square kilometers in area and 300 km from the mainland
B) 3,000 square kilometers in area and 100 km from the mainland
C) 100 square kilometers in area and 3,000 km from the mainland
D) 300 square kilometers in area and 1,000 km from the mainland
E) All islands are at the same latitude, so they are all likely to have the same species richness.