D Question 27 Grogu Corporation's contribution format income statement for the most recent month is shown below Sales (7,100 units) Variable expenses Contribution margin Fixed expenses Total Per Unit $248.500 $35.00 134,900 19.00 113,600 $16.00 54,800 Net operating income $58,800 Required: What would be the revised net operating income per month if the sales volume decreases by 90 units? $55,650 O $61.950 O $57.360 $58,000 3 ps