Which of the following represents energy flow in a grazing food web?  

A) Producers $\rightarrow$ detritivores $\rightarrow$ decomposers
B) Producers $\rightarrow$ decomposers $\rightarrow$ detritivores
C) Producers $\rightarrow$ herbivores $\rightarrow$ decomposers $\rightarrow$ carnivores
D) Producers $\rightarrow$ herbivores $\rightarrow$ carnivores $\rightarrow$ decomposers
E) Producers $\rightarrow$ herbivores $\rightarrow$ detritivores $\rightarrow$ carnivores