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 Standard Standard Quantity Rate Unit Cost 0.6 $0.80 $0.48 Variable manufacturing overhead During August, LLL had the following actual results: Units produced and sold 25,500 Actual variable overbead $ 9.540 Actual direct labor hours 16,500 Required: Comput LLL's variable overhead rate variance, variable overhead efficiency variande, and over- or underapplied variable overhead. (Do not round Intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance).) Variable Overhead Rate Variance Variable Overhead Efficiency Variance Variable Overhead Spending Variance