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 9,700 20,900 5,400 Sales $ 320,100 $ 324,000 $ 151,200 174,600 188, 100 Variable expenses Contribution margin Fixed expenses Net operating income (loss) Contribution margin per unit 90,000 171,000 31,500 84.000 (19,200) $ $ 231,500 $ $ 15 $ 15