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 more than one product is being sold in each of the four following case situations: (Loss amounts should be indicated by a minus sign.). Case #2 Case #3 Case #4 Case #1 451,000 Sales $ $ $ 208,000 143,520 297,000 77,220 Variable expenses Contribution margin Fixed expenses Net operating income (loss) Contribution margin ratio (percent) 53,000 $ $ 474,000 106,440 84 % $ 60,890 39 (6,220) %