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: Answer is not complete. 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: Note: Loss amounts should be indicated by a minus sign. Unit sold Sales Variable expenses Fixed expenses Net operating income (loss) Contribution margin per unit Case #1 Case #2 Case #3 Case #4 9,300 19,700 4,900 $ 279,000 $ 375,000 156,800 158,100 236,400 85,000 165,000 88,000 45,000 $ 158,400 (19,400) 14 $ 12