Scotch Brand Products produces packaging tape and has determined the following to be its standard cost of producing one case of budget packaging tape: Material (3.50 ounces at $1.30 per ounce) Labor (0.30 hour at $12.00 per hour) Overhead Total $4.55 3.60 2.40 $10.55 At the start of 2021, Scotch Brand planned to produce 80,000 cases of tape during the year. Overhead is allocated based on the number of cases of tape produced. Annual fixed overhead is budgeted at $64,000 and the variable overhead costs are budgeted at $1.60 per case. The following information summarizes the results for 2021: Actual production, 81,000 cases Purchased 275,000 ounces of material at a total cost of $343,750 Used 266,250 ounces of material in production Employees worked 22,000 hours, total labor cost $275,000 Actual overhead incurred, $193,000 How much is the controllable overhead variance for 2021? $6000 unfavorable $6,000 favorable $600 unfavorable $600 favorable $6,200 unfavorable