Lamp Light Limited (LLL) manufactures lampshades. It applies variable overhead on the basis of direct labor hours. Information from LLL's standard cost card follows: Standard Quantity 0.6 Standard Rate $0.80 Standard Unit Cost $0.48 Variable manufacturing overhead During August, LLL had the following actual results: Units produced and sold Actual variable overhead Actual direct labor hours $ 25,200 9,510 16,200 Required: Compute LLL's variable overhead rate variance, variable overhead efficiency variance, and over- or underapplied variable overhead. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for Favorable/Overapplied and "U" for Unfavorable/Underapplied.) Variable Overhead Rate Variance Variable Overhead Efficiency Variance Variable Overhead Spending Variance