Fill in the missing amounts in each of the eight case situations below. Each case is independent of the others. (Hint: One way to find the missing amounts would be to prepare a contribution format income statement for each case, enter the known data, and then compute the missing items.) 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 Case #1 Case #2 Case #3 Case #4 $ 310,000 Sales Variable expenses Fixed expenses Net operating income (loss) Contribution margin ratio (percenf) $460,000$ 194,000 116,400 65,000 89,900 473,000 81,800 43% $56,720$(7,900) 76%