Required information IThe 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 Pixed expenses Net operating income s 75,000 45,000 30,000 22,800 $ 7,200 5. If sales decline to 900 units, what would be the net operating income