Davison Co. prepared the following contribution format income statement based on a sales volume of 10,000 units (the relevant range of production is 5,000 units to 15,000 units): Sales $ 250,000 Variable expenses 150,000 Contribution margin 100,000 Fixed expenses 75,000 Net operating income $ 25,000 Required: If sales declined to 9,000 units, what would be the net operating income