The diagram presents the pyramid of energy for this food chain: grass $\rightarrow$ grasshopper $\rightarrow$ bluebird. A pyramid of energy indicates the total amount of energy contained in the biomass of organisms at each trophic level in the food chain per year. To one decimal place, what percentage of energy is passed from the producer to the herbivore?
- A$3.7\%$
- B$4.5\%$
- C$20.8\%$
- D$21.8\%$