Fill in the missing amounts in each of the eight case situations below. Each case is independent of the 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 she a minus sign.) Units sold Sales Variable expenses Case 1 Case 2 Case 3 Case 4 9,700 19,100 5,300 $ 261,900 $ 370,000 $ 159,000 174,600 267,400 Contribution margin Fixed expenses 88,000 171,000 88,000 Net operating income (loss) $ 51,000 $ 65,800 $ (19,100) Contribution margin per unit $ 15 $ 8