Which statement is supported by the MacArthur-Wilson model simulation?
a. Only large islands or islands close to the mainland reach equilibrium between colonization and extinction rates.
b. With time, colonization rates go up and extinction rates go down, leading to an equilibrium characterized by no net change in species richness.
c. Eventually, no matter the size of an island or its distance from the mainland, the rates of colonization and extinction of species reach zero.
e. Species diversity depends on the rates of colonization and extinction, which depend on the size and location of an island.