Selling price Variable expenses Contribution margin Per Unit $ 130 78 $ 52 Percent of Sales 100% 60 408 Fixed expenses are $86,000 per month and the company is selling 2,800 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- components that increase the variable expense by $6 per unit and increase unit sales by 15%. 2-b. Should the higher-quality components be used? Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Req 2A Req 2B 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 $6 per unit and increase unit sales by 15%. Net operating increases by 37,800 income