Thornbrough Corporation produces and sells a single product with the following characteristics: Per Unit Percent of Sales Selling price $ 220 100 % Variable expenses 44 20 % Contribution margin $ 176 80 % The company is currently selling 7,000 units per month. Fixed expenses are $901,000 per month. The marketing manager would like to cut the selling price by $18 and increase the advertising budget by $53,000 per month. The marketing manager predicts that these two changes would increase monthly sales by 1,000 units. What should be the overall effect on the company's monthly net operating income of this change? Multiple Choice decrease of $105,000 increase of $149,000 increase of $105,000 decrease of $21,000