Marino Company is currently selling 10,000 units of its product per month at $10.60 per unit for total monthly sales of $106,000. The companys variable expenses are $4.30 per unit and its monthly fixed expenses total $10,600. An increase in the advertising budget of $4,600 is expected to increase its monthly sales by 1,000 units for total monthly sales of $116,600. This proposal will cause net operating income to