Per Unit $105 Percent of Sales 100% Selling price Variable expenses Contribution margin Fixed expenses are $81,000 per month and the company is selling 3,800 units per month 2-a. 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 20%. 2-b. Should the higher quality components be used? Complete this question by entering your answers in the tabs below. Reg 2 Reg 2 How much will net operating income increase (decrease) per month if the company uses higher quality components that Increase the variable expense by S4 per unit and increase unit sales by 20% come