Which of the Following Series Best Represents the Energy Flow $\rarr$

Multiple Choice

Which of the following series best represents the energy flow in an ecosystem?

A) sun $\rarr$ consumer $\rarr$ producer $\rarr$ heat
B) consumer $\rarr$ producer $\rarr$ decomposer $\rarr$ sun
C) producer $\rarr$ consumer $\rarr$ decomposer $\rarr$ sun
D) sun $\rarr$ producer $\rarr$ consumer $\rarr$ heat