Once a company hits its break-even point, net operating income will Increase by an amount equal to the selling price per unit multiplied by the number of units sold above the break-even point. Increase by an amount equal to the contribution margin ratio multiplied by the number of units sold above the break-even point. Increase by an amount equal to the contribution margin per unit multiplied by the number of units sold above the breakeven point. Increase by an amount equal to the variable cost per unit multiplied by the number of units sold above the break-even point