Required: a. Assume that only one product is being sold in each of the four following case situations: Answer is complete but not entirely correct. Case #1 Case #3 Case #4 Unit sold Sales Variable expenses Fixed expenses Net operating income (loss) Contribution margin per unit 9,700 $ 252,200 194,000 96,000 Case #2 13,800 $ 331,200 151,800 176,000 20,200 $ 424,200 242,400 78,000 4,100 $ 139,400 205,000 78,000 $ (37,800) $ 3,400 $ 103,800 $ (12,400) $ 6 $ 13 $ 9 $ (47) b. Assume that more than one product is being sold in each of the four following case situations: Answer is complete but not entirely correct. Case #1 Case #2 Case #4 $ Sales Variable expenses Fixed expenses Net operating income (loss) Contribution margin ratio (percent) 448,000 268,800 110,000 69,200 191,000 129,880 56,000 5,120 Case #3 $ 479,874 98,176 468,000 $ 103,050 $ 303,000 81,810 225,000 (3,810) $ $ 40% 32% 81% 73%