The static budget for the month of May was for 9,000 units with direct materials at $15 per unit. Direct labor was budgeted at 45 minutes per unit for a total of $81,000. Actual output for the month was 8,500 units with $127,500 in direct materials and $77,775 in direct labor expense. The direct labor standard of 45 minutes was maintained throughout the month. Variance analysis of the performance for the month of May shows a(n)