Required information [The following information applies to the questions displayed below.] Data for Klauer Corporation are shown below: Per Unit Percent of Sales Selling price Variable expenses $115 69 100% 60 Contribution margin $ 46 40% Fixed expenses are $83,000 per month and the company is selling 2,500 units per month. Required: 1-a. How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $8,800 and monthly sales increase by $17,250? 1-b. Should the advertising budget be increased? Complete this question by entering your answers in the tabs below. Req 1A Req 18 How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $8,800 and monthly sales increase by $17,250? (Round any unit calculations up to the nearest whole unit.) Net operating income by