The master budget at Monroe Manufacturing last period called for sales of 43,100 units at $53 each. The costs were estimated to be $37 variable per unit and $535,000 fixed. During the period, actual production and actual sales were 46,100 units. The selling price was $52 per unit. Variable costs were $39 per unit. Actual fixed costs were $526,000. Required: Prepare a sales activity variance analysis. Note: 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. Sales revenue Less: Variable costs Contribution margin Less Fixed costs Operating profits Monroe Manufacturing Sales Activity Variance Flexible Budget Sales Activity Variance Master Budget