Bressman Inc. has provided the following data concerning one of the products in its standard cost system.

Variable manufacturing overhead is applied to products on the basis of direct labor-hours.
Inputs Standard Quantity or Hours per Unit of Output Standard Price or Rate
Variable manufacturing overhead 0.20 hours $6.70 per hour The company has reported the following actual results for the product for May: Actual output 9,300 units Actual direct labor-hours 1,820 hours Actual variable overhead cost $ 12,558 The variable overhead efficiency variance for the month is closest to: