Which Statement About Organisms' "Niches" Is False

Which statement about organisms' "niches" is false?

A) The niche summarizes environmental factors influencing growth, survival, and reproduction of a species.
B) The niche concept was developed by Joseph Grinnell and Charles Elton.
C) The "fundamental" niche refers to physical, but not biological, aspects of the environment.
D) Interactions such as competition and parasitism may restrict the size of an organism's niche.
E) In the laboratory, two species with identical niches are especially easy to maintain in a mixed culture.