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 Fixed expenses Net operating income. $ 10,000 5,500 4,500 2,250 $2,250 6. If the selling price increases by $2 per unit and the sales volume decreases by 100 units, what would be the net operating income? Not operating income