Chec TB Problem Qu. 6-239 Shelhorse Corporation produces and ... Shelhorse Corporation produces and sells & single product. Data concerning that product appear below points Per Unit $ 110 Percent of Sales 100% ebook Selling price Variable expenses Contribution margin References Fixed expenses are $357,000 per month. The company is currently selling 5.200 units per month Required: The marketing manager believes that a $14,000 increase in the monthly advertising budget would result in a 200 unit increase in monthly sales. What should be the overall effect on the company's monthly net operating income of this change? Change in net operating income