HELP ASAP!! DUE TOMORROW!! WILL MARK AS BRAINLIEST IF ANSWERED NOW!!

In a particular ecosystem, alligators eat fish. Only about 10 percent of the energy available to the fish is available to the alligators. What happens to the remaining energy?
A. It is lost from the ecosystem as heat.
B. It is destroyed in chemical reactions.
C. It is converted into the fish’s biomass.
D. It is absorbed during cellular respiration.