Trevorrow Corporation manufactures and sells a single product. The company uses units as the measure of activity in Its budgets and performance reports. During June, the company budgeted for 6,800 units, but its actual level of activity was 6,760 units. The company has provided the following data concerning the formulas used in its budgeting and its actual results for June: Data used in budgeting: Fixed element Variable element per month per unit Revenue $ 28.20 Direct labor $ 2.60 Direct materials 10.50 Manufacturing overhead 37, 800 1.30 Selling and administrative 23 ,400 0.40 expenses Total expenses $ 61, 200 $ 14.80 Actual results for June: Revenue $198, 068 Direct labor $ 17, 068 Direct materials $ 68, 770 Manufacturing overhead $ 46, 478 Selling and administrative expenses $ 26, 174 The activity variance for net operating Income In June would be closest to