Salley Corporation produces and sells a single product. Data concerning that product appear below: Per Unit Percent of Sales $ 200 Selling price Variable expenses Contribution margin 100 % 20% 80% 40 160 Fixed expenses are $1,323,000 per month. The company is currently selling 9,380 units per month. Management is considering using a new component that would increase the unit variable cost by $9. Since the new component would increase the features of the company's product, the marketing manager predicts that monthly sales would increase by 600 units. What should be the overall effect on the company's monthly net operating income of this change? O increase of $90,600 O decrease of $6,180 O decrease of $90,600 increase of $6,180