14. Data concerning Damberger Corporation's single product appear below: Per Unit $150 Percent of Sales 100% Selling pric Variable expenses Contribution margin $60 40% The company is currently selling 5,000 units per month. Fixed expenses are $243,000 per mont The marketing manager believes that an $11,000 increase in the monthly advertising budget would result in a 180 unit increase in monthly sales. What should be the overall effect on the company's monthly net operating income of this change? A. increase of $200 B. decrease of $200 C. increase of $10,800 D. decrease of $11,000