Which shows a correct order to solve this story problem? simone was arranging a party for some friends. she needed 25 balloons and 12 packs of napkins. napkins cost $4.50 per pack and balloons cost $0.75 each. how much money did simone spend? a. step 1: multiply $0.75 by 12. step 2: multiply $4.50 by 25. step 3: add the two products. b. step 1: add $0.75 and 12. step 2: add $4.50 and 25. step 3: multiply the two sums. c. step 1: multiply $0.75 by 25. step 2: multiply $4.50 by 12. step 3: add the two products. d. step 1: calculate the cost of 1 napkin. step 2: multiply $0.75 by 25. step 3: add the two numbers together.