Check my work Required information Exercise 6-5 Changes in Variable Costs, Fixed Costs, Selling Price, and Volume (LO6-4) [The following information applies to the questions displayed below.) Data for Hermann Corporation are shown below: Selling price Variable expenses Contribution margin Percent Per Unit of Sales $ 90 100 63 70 $ 27 300 Fixed expenses are $30,000 per month and the company is selling 2,000 units per month ces Exercise 6-5 Part 2 2-a. Refer to the original data. However, in the text it is provided as "How much will net operating income increase (decrease) per month if the company uses higher-quality components that increase the variable expense by $2 per unit and increase unit sales by 10% 2-b. Should the higher quality components be used