The correct path of energy flow in an ecosystem is

• A
  Producers $\rightarrow$ Carnivores $\rightarrow$ Herbivores $\rightarrow$ Decomposers
• B
  Producers $\rightarrow$ Herbivores $\rightarrow$ Carnivores $\rightarrow$ Decomposers
• C
  Herbivores $\rightarrow$ Carnivores $\rightarrow$ Producers $\rightarrow$ Decomposers
• D
  Herbivores $\rightarrow$ Producers $\rightarrow$ Carnivores $\rightarrow$ Decomposers