Required information [The following information applies to the questions displayed below] Data for Hermann Corporation are shown below: Selling price Variable expenses Contribution margin Per Unit $ 55 Percent of Sales 100% 33 $22 60 40% Fixed expenses are $71,000 per month and the company is selling 4,100 units per month. 2-a. Refer to the original data. How much will net operating income increase (decrease) per month if the company uses higher-quality components that increase the variable expense by $4 per unit and increase unit sales by 25%. 2-b. Should the higher-quality components be used? Complete this question by entering your answers in the tabs below. Req 2A Req 28