Using the original sales scenario, what are the following? Sales dollars $ Total contribution margin dollars $ Operating income $ Break-even sales in dollars $ (round to the nearest dollar, if necessary) Break-even units (round UP to the next unit, if necessary) Using the original sales scenario, what are the following? Sales dollars $ Total contribution margin dollars $ Operating income $ Break-even sales in dollars $ (round to the nearest dollar, if necessary) Break-even units (round UP to the next unit, if necessary)