A potential energy diagram is shown. The reaction process begins at constant potential energy for a period labeled as W. Potential energy then increases as the reaction proceeds for a period labeled X. At a point Y, the direction of the graph changes to show decreasing potential energy. The potential energy decreases below the initial point until it plateaus until the completion of the reaction at a point labeled Z. The energy difference between W and Y is labeled A. The energy difference between Y and Z is labeled B. The energy difference between W and Z is labeled as C. B is greater than A. B is greater than C. A and C are approximately equal. Refer to the above diagram. Why is this reaction considered to be exothermic? Question 24Select one: a. Because energy difference B is greater than energy difference C b. Because energy difference B is greater than energy difference A c. Because energy differnce A is greater than energy difference C d. Because energy difference B is greater than energy difference C plus energy difference A e. Because energy difference A and energy difference C are about equal