The following data are the actual results for Marvelous Marshmallow Company for August Actual output Actual variable overhead Actual fixed overhead Actual machine time 12,000 cases $422,000 $130,000 39,600 machine hours Standard cost and budget information for Marvelous Marshmallow Company follows: $ Standard variable-overhead rate Standard quantity of machine hours Budgeted fixed overhead Budgeted output 10.00 per machine hour 3 hours per case of marshmallows $126,000 per month 14,000 cases per month Required: 1. Use any of the methods explained in the chapter to compute the following variances. (Indicate the effect of each variance by selecting "Favorable" or "Unfavorable". Select "None" and enter "O'" for no effect (i.e., zero variance).) Variable-overhead spending variance Variable-overhead efficiency variance Unfavorable Unfavorable Unfavorable nfavorable c. Fixed-overhead budget variance d. Fixed-overhead volume variance