The master budget at Monroe Manufacturing last period called for sales of 42,000 units at $42 each. The costs were estimated to be $26 variable per unit and $524,000 fixed. During the period, actual production and actual sales were 45,000 units. The selling price was $41 per unit. Variable costs were $28 per unit. Actual fixed costs were $515,000. 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. Monroe Manufacturing Sales Activity Variance Flexible Budget Sales Activity Variance Master Budget Sales revenue $ 1,890,000 Less Variable costs 1,170,000 Contribution margin $ 720,000 $ 0 Less Fixed costs 524,000 Operating profits $ 196,000 $ 0