A 2,000 Acre Coniferous Forest in British Columbia Has 8

A 2,000 acre coniferous forest in British Columbia has 8 species of coniferous trees.
Over 100,000 individuals of each species have been counted by forest managers.A 2,300 acre temperate rain forest in the State of Washington has 12 species of trees, with about 75,000 to 80,000 individuals noted in each species.A similar sized tropical forest in Costa Rica is known to have over 5,000 species of trees.
a.Biologists have counted between 3 and 100 individuals within each species.A Sonoran desert area in Baja California has 150 species of cactus with a range of 5 to 200 individuals counted in each species.
-Which forest or community has the greater species richness?

A) the coniferous forest in British Columbia
B) the Costa Rican tropical rain forest
C) the temperate rain forest in Washington State
D) the Southwestern desert
E) The species richness is the same in all of the communities.