Calculate the missing amounts for each of the following firms: (Do not round intermediate calculations. Round "Selling Price" and "Variable Costs Per Unit" to 2 decimal places. Enter any negative amount with a minus sign.) Units Sold Selling Price Variable Costs Per Unit Contribution Margin Fixed Costs Operating Income (Loss) Firm A 29.00 $ 119,500 $ 41,900 11,300 $ 8,900 Firm B 17.00 63,600 33,490 (5,760) Firm C 8.40 4.20 10,800 42,440 Firm D 4,100 46.00 50,660