Ebay Manufacturing Company produces and sells one product. Information for this product appears below Selling price. Variable expenses Contribution margin Percent of Per Unit $110 Sales 22 100% 204 20% 5 Ebay's total fixed expenses are $357,000 per month. Ebay's current monthly sales volume is 5,200 Required: Ebay's marketing manager believes that a $14,000 increase in monthly advertising expenditures would result in a 200 increase in monthly unit sales. How much would Ebay's monthly operating income change as a result of these expectations? Change in net operating income