Fill in the missing amounts in each of the eight case situations below. Each case is independent of the others. Required: a. Assume that only one product is being sold in each of the four following case situations: b. Assume that more than one product is being sold in each of the four following case situations: Complete this question by entering your answers in the tabs below. Required A Required B Assume that only one product is being sold in each of the four following case situations: (Loss amounts should be indicated by a minus sign.) Case #1 Case #2 Case #3 Case #4 Unit sold 8,100 19,300 4,700 Sales $ $ 340,000 $ 136,300 259,200 145,800 Variable expenses 231,600 81,000 175,000 89,000 Fixed expenses Net operating income (loss) Contribution margin per unit $ (25,400) $ 98,700 $ (32,600) $ 11 $ 9