Selected operating data for Oakbrook Company in four independent situations are shown below. Fill in the blanks for each independent situation. B D Sales $400,000 $ C. $ e. $650,000 $ a. $ f. $ g. $ b. $131,000 $62,000 $15,000 $63,200 $28,800 $222,500 $(27,500) Variable expense Fixed expense Net income (loss) before tax Units sold Unit contribution margin Contribution margin ratio $35,000 30,000 d. $5.20 $7.00 0.4 h