C, D, and E are wrong and involve random constants. Thisnarrows it down to A and B; it is A because the negative sign meansthat energy is being given off when it (SO2) forms. I hope you found this helpful, please rate! :) I hope you found this helpful, please rate! :) Solution C, D, and E are wrong and involve random constants. Thisnarrows it down to A and B; it is A because the negative sign meansthat energy is being given off when it (SO2) forms. I hope you found this helpful, please rate! :) I hope you found this helpful, please rate! :).