Seved See Clear Company manufactures clear plastic CD cases. It applies variable overhead based on the number of machine hours used. Information regarding See Clear's overhead for the month of December follows: Standard Unit Cost Standard Quantity 0.2 machine hours per Variable manufacturing overhead Standard Rate $0.70 per machine hour case $ 0.14 During December, See Clear had the following actual results: Number of units produced and sold Actual variable overhead cost Actual machine hours 300,000 $ 40,000 61,000 Required: Compute See Clear'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).) Vanable Overhead Rate Variance Vanable Overhead Efficiency Variance Variable Overhead Spending Variance P mark