A teacher is teaching a lesson on energy transformations. Which explanation is the best at comparing the amount of energy contained in a granola bar you eat for breakfast and the amount of mechanical energy used to walk to school. A. the amount of chemical energy in the granola bar is equal to the mechanical energy B. the amount of chemical energy in the granola bar is less than the mechanical energy C. the amount of chemical energy in the granola bar is greater than the mechanical energy D. the energy amounts cannot be compared