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 Standard Unit Cost Variable manufacturing overhead $0.80 $0.48 During August, LLL had the following actual results: Units produced and sold Actual variable overhead Actual direct labor hours $ 26,100 9,570 16,800 Required: Compute LLLs 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