Which One of the Following Is TRUE Regarding the Flow

Multiple Choice

Which one of the following is TRUE regarding the flow of energy through an ecosystem?

A) Energy flows from the sun to consumers and then to producers.
B) Energy flows in multiple directions through an ecosystem.
C) Energy is cycled through an ecosystem and rarely lost as heat.
D) Energy flows from the sun to producers and then to consumers.
E) As energy flows through an ecosystem, it does not change form.