irrelevant costs are costs that vary across alternatives. True False To maximize profits, produce the product with the lowest contribution margin per unit of the constraint. True False Last year, John Company reported sales of $800,000, a contribution margin of $200,000, and an operating income of $40,000. Based on this information, how much sales revenue did the company need to generate in order to break-even? $960,000 S600,000 $640,000 $800,000