Problem 8-10 Performing a Break-Even Analysis (LO1 - CC1, 3; LO2 - CC6, 12A) - EDITED Fill in the missing amounts in each of the following four case situations. Treat each case independently (Hint One way to find the missing amounts would be to prepare a contribution margin income statement fot each case, enter the known data, and then compute the missing items.) a. Assume that only one product is being sold in each of the following four case situations: (Negative amounts should be indicoted by a minus sign. Enter your contribution margin onswers as per unit dolis values. Enter your answers rounded to the nearest whole number.)