According to the Theory of Island Biogeography, the Number of Species

According to the theory of island biogeography, the number of species increases directly in proportion to the size of the island. True or False?

A) True. Bigger islands have more species.
B) False. Bigger islands have more species generally, but with small islands, an increase in area makes a big difference while with larger island, it doesn't make much difference.
C) True, the smaller the island, the fewer the species.
D) False. Small islands close to the mainland often have more species than larger islands farther from the mainland.
E) The theory of island biogeography doesn't really compare area and species number.