Based on the diagram, which statement explains how energy is conserved during this chemical reaction? D B Potential energy of a system - - 1 1 I с Reaction progress A. The potential energy changes indicated by C and B involve energy lost by the surroundings. B. The potential energy lost by the reaction system (B) is gained by the surroundings. C. The potential energy gained by the reaction system (A) is also gained by the surroundings. O D. The potential energy lost by the reaction system (C) is also lost by the surroundings.​