Crystal Glassware Company has the following standards and flexible-budget data. Standard variable-overhead rate Standard quantity of direct labor Budgeted fixed overhead Budgeted output Actual results for April are as follows: Actual output Actual variable overhead Actual fixed overhead Actual direct labor $ 6 per direct-labor hour 2.0 hours per unit of output 37,500 units $ 150,000 30,000 units $ 480,000 $ 145,500 75,000 hours EX 11-22 (Algo) Straightforward Computation of Overhead Variances (LO 11-5) Required: Use the variance formulas to compute the following variances. Note: Indicate the effect of the first three variance by selecting "Favorable" or "Unfavorable". Select "None" and enter "O" for no effect (i.e., zero variance). Select "Positive" or "Negative" for the Fixed-overhead Volume variance. 1. Variable-overhead spending variance 2. Variable-overhead efficiency variance 3. Fixed-overhead budget variance 4. Fixed-overhead volume variance