Larita Corporation produces and sells a singte product Data concening that product appear below Percent o Sales 100% 20% Per Unit $130 Seling price Variable expenses 26 ibution margin $104 80% Fued expenses are $359,000 per month The company is currenty seling 5.400 units per month The markeling manager believes that a $16.000 increase in the monthly advertising budget would result in a 200 unit increase in monthly sales Requifed: What should be the overall ettect on the company's monthly net operating income of this change? (Negative amount should be insticated by a minus sign.) S 4,800