The following data are available for the most recent year of operations for Slacker & Sons. The revenue portion of the sales activity variance is $225,000 F. Master budget based on actual sales of 170,000 units: Revenue Materials Labor Variable manufacturing overhead and administrative costs Fixed manufacturing overhead and administrative costs $4,500,000 870,000 645,000 145,000 500,000 Required: a. How many units were actually sold in the most recent period? b. Prepare a sales activity variance for the most recent year for Slacker & Sons. Complete this question by entering your answers in the tabs below. Required A Required B Prepare a sales activity variance for the most recent year for Slacker & Sons. (Do not round intermediate calculations. 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 Variable costs: Materials Direct labor Variable manufacturing and administrative Total variable costs Contribution margin Fixed costs: Manufacturing overhead and administrative Total fixed costs Operating profits SLACKER & SONS Sales Activity Variance Flexible Budget Sales Activity Variance Master Budget < Required A Required B >