Calculate the missing amounts for each of the following firms: (Do not round intermediate calculations.) Operating Income (Loss) Contribution Margin Ratio Variable Costs Sales Fixed Costs 33% Firm A 315,000 38,418 Firm B 464,000 % 120,000 70,565 29 % Firm C 127,000 38,700 20 % Firm D 59,000 (4,945)