Piechocki corporation manufactures and sells a single product. the company uses units as the measure of activity in its budgets and performance reports. during may, the company budgeted for 6,800 units, but its actual level of activity was 6,750 units. the company has provided the following data concerning the formulas used in its budgeting and its actual results for may: data used in budgeting: fixed element per month variable element per unit revenue - $ 34.30 direct labor $ 0 $ 6.30 direct materials 0 13.90 manufacturing overhead 38,000 1.80 selling and administrative expenses 25,600 0.30 total expenses $ 63,600 $ 22.30 actual results for may: revenue $ 232,600 direct labor $ 41,890 direct materials $ 94,925 manufacturing overhead $ 44,000 selling and administrative expenses $ 30,480 the revenue variance for may would be closest to: