The master budget at Western Company last period called for sales of 226,600 units at $10.6 each. The costs were estimated to be $3.91 variable per unit and $226,600 fixed. During the period actual production and actual sales were 231,600 units. The selling price was $10.70 per unit. Variable costs were $6.10 per unit. Actual fixed costs were $226,600. Required Prepare a sales activity variance analysis. (Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable lf there is no effect, do not select either option.) WESTERN COMPANY Sales Activity Variance Flexible Budget Sales Activity Variance Master Budget Sales revenue Less Variable costs Contribution margin% Less: Fixed costs Operating profits 0