2 Part 1 of 2 125 points Required information [The following information applies to the questions displayed below.) Data for Hermann Corporation are shown below: 03:16:32 Selling price Variable expenses Skipped ellook Het Contribution margin Percent of Per Unit $ 60 Sales 100% 39 65 $21 35 Fixed expenses are $72,000 per month and the company is selling 4,200 units per month. Required: 1a. How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $9,600, the monthly sales volume increases by 100 units, and the total monthly sales increase by $6,000? 1-b. Should the advertising budget be increased? Complete this question by entering your answers in the tabs below. Req 1A Req 18