0 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 Net operating income $ 85,00 59,500 25,500 20,400 $ 5,180 7. If the variable cost per unit increases by $1, spending on advertising increases by $1,750, and unit sales increase by 250 units, what would be the net operating income? Not operating income