The following graphic shows the energy curves for the same chemical reaction of A B → AB. A diagram showing the activation energy for a reaction with and without an enzyme over time. The top line begins on the left and reaches the highest peak on the graph for energy used before decreasing over time. The bottom line begins in the same place as the top line on the left but reaches a lower peak for energy used before decreasing over time to the same endpoint as the top line. © G. Andruk 2005 Creative Commons, CC BY-SA 3.0 Which of the following is a correct interpretation of the graphic? The top reaction used an additional energy source. The bottom reaction added more molecules to the products. An inhibitor was removed to slow down the bottom reaction. An enzyme lowered the activation energy in the bottom reaction.