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 Fixed expenses $ 20,000 12,000 8,000 6,000 Net operating income $ 2,000 5. If sales decline to 900 units, what would be the net operating income? Answer is complete but not entirely correct. Net operating income $ 0X