Required information Skip to question [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 $ 10,000 Variable expenses 5,500 Contribution margin 4,500 Fixed expenses 2,250 Net operating income $ 2,250 5. If sales decline to 900 units, what would be the net operating inc