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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. Assume that only one product is being sold in each of the four following case situations: (Loss amounts should be indicated by. a minus sign.) 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. Assume that only one product is being sold in each of the four following case situations: (Loss amounts should be indicated by. a minus sign.)