Which of the Following Statements About the Bottom-Up View of Trophic

Which of the following statements about the bottom-up view of trophic cascades is true?

A) The bottom-up view of ecosystems is governed by the rates of consumption at the highest trophic levels.
B) The bottom-up view of ecosystems factors in the amount of competition in an ecosystem.
C) The bottom-up view of ecosystems is influenced by the species composition at multiple trophic levels.
D) The bottom-up view of ecosystems takes into account the amount of energy that flows through an ecosystem, starting with NPP and the energy passed to other trophic levels.