REQUIREMENT 1: Fill in the missing amounts for the four companies. Company A Company B Company C Units Sold 700 ? ? Company D 600 Sales in dollars $35,000 $40,000 $ 35,000 ? Total Variable Costs $14,000 ? ? $18,000 Per Unit Contribution Margin ? $ 90 $ 100 $ 60 Total Fixed Cost $10,000 $ 9,000 $ 12,000 ? Operating Income (loss) ? $27,000 $ 8,000 $16,000