Shawl Corporation's variable overhead is applied on the basis of direct labor-hours. The standard cost card for product F02E specifies 5.5 direct labor-hours per unit of F02E. The standard variable overhead rate is $6.80 per direct labor-hour. During the most recent month, 1,560 units of product F02E were made and 8,700 direct labor hours were worked. The actual variable overhead incurred was $52,635. Required: A. What was the variable overhead rate variance for the month? B. What was the variable overhead efficiency variance for the month?