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 Units Sold Selling Price Variable Costs Per Unit Contribution Margin Fixed Costs Operating Income (Loss) Firm A 21.00 $ 102,100 $ 42,800 11,900 $ 8,600 Firm B 17.00 63,500 32,680 (5,570) Firm C 8.00 4.20 9,200 41,500 Firm D 4,120 51.00 47,910