E9.13 (Algo) Calculating Variable Manufacturing Overhead Variances [LO 9.5] 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: 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 calculations. Indicate the effect of each variance by selecting \"F\" for favorable, \"U\" for unfavorable, and \"None\" for no effect (i.e., zero variance)