Calculate the missing amounts for each of the following firms: (Do not round intermediate calculations. Round "Selling Price" to 2 decimal places. Enter any negative amount with a minus sign.) Units Sold Selling Price Variable costs Por Unit Contribution Margin Fixed Costs Operating Income (Loss) 25.00 $ 100,000 $ 10,000 $ 9,000 40,000 66,000 Firm Firm B Form C Firm D 19.00 4.00 33.000 (6,000) 7.00 12,000 40.000 4,000 50.00 48,000