Fill in the missing amounts in each of the eight case situations below. Each case is Independent of the others. (Hint: One way to find the missing amounts would be to prepare a contribution format Income statement for each case, enter the known data, and then compute the missing items.) Required: a. Assume that only one product is being sold in each of the following four case situations: Unit sold Sales Variable expenses Fixed expenses Operating income (loss) Contribution margin per unit Case #1 Case #2 Case #3 Case #4 17,100 11,400 6,840 $ 205,200 $ 114,000 $ 342,000 136,800 79,800 57,000 36,480 114,000 $ 9,120 $ 13,680 $ (11,400) $ 10 $ 13