! Required information [The following information applies to the questions displayed below.] Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units): Sales Variable expenses Contribution margin $ 80,000 52,000 28,000 21,840 Net operating income $ 6,160 Fixed expenses Required: 2. What is the contribution margin ratio? Contribution margin ratio %