In a Food Chain with Four Trophic Levels,what Would Be

Multiple Choice

In a food chain with four trophic levels,what would be the energy in the top trophic level if the energy contained in the primary producer level is 40,000 kcal/m²/yr? Assume a trophic level transfer efficiency of 10%.

A) 4,000 kcal/m²/yr
B) 400 kcal/m²/yr
C) 40 kcal/m²/yr
D) 4 kcal/m²/yr
E) 0) 4 kcal/m²/yr