Delta Products prepares its budgets on the basis of standard costs. A responsibility report is prepared monthly showing the differences between master budget and actual results, Variances are analyzed and reported separately. There are no materials inventories The following information relates to the current period: Standard costs (per unit of output) Direct materials, 6 gallons @ $2.00 per gallon Direct labor, 3 hours $36 per hour Factory overhead Variable (25% of direct labor cost) Total standard cost per unit Actual costs and activities for the month follow. Materials used Output Actual labor costs Actual variable overhead 15,120 gallons at $1.80 per gallon 2,280 units 6,400 hours at $40 per hour 60,750 Required: Prepare a cost variance analysis for the variable costs. (Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) O References Required: Prepare a cost variance analysis for the variable costs (Indicate the effect of each variance by selecting "F* for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) Direct materials Price variance Eticiency variance Direct materials cost variance Direct labor Price variance Efficiency variance Direct labor cost variance Variable overhead Price variance Eficiency variance Variable overhead cost variance