Lamp Light Limited (LLL) manufactures lampshades. It applies variable overhead on the basis of direct labor hours. Information from LL's standard cost card follows: During August, LLL had the following actual results: Required: Compute LLL's variable overhead rate variance, variable overhead efficiency variance, and over-or underapplied variable overhead Note: Do not round intermediate colculations. Indicote the effect of each varionce by selecting "F" for favorable, "U" for unfovorable, and "None" for no effect (i.e., zero variance)