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 Variable manufacturing overhead 0.6 $0.80 SO.48 During August, LLL had the following actual results: Units produced and sold 24,200 Actual variable overhead $ 9, 410 Actual direct labor hours 15, 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, "U" for unfavorable, and "None" for no effect (i.e., zero variance).)