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 b a minus sign.) Units sold Sales Variable expenses Contribution margin Fixed expenses Net operating income (loss) Case 1 Case 2 Case 3 Case 4 9,200 20,200 4,800 $ 230,000 $ 432,100 $ 134,400 147,200 161,600 100,000 172,000 92,000 $ $ 66,400 $ 16 $ 175,600 $ (39,200) 13 Contribution margin per unit Required A Required B < Required A Required B > Assume that more than one product is being sold in each of the four following case situations: (Loss amounts sh sign.) Sales Variable expenses Case 1 Case 2 Case 3 Case 4 $ 454,000 $ 200,000 $ 291,000 128,000 90,210 Contribution margin Fixed expenses Net operating income (loss) $ 45,900 Contribution margin ratio (percent) 35 % 54,000 474,000 $ 48,000 $ (29,210) 75% %