Osage, Inc, manufactures and sells lamps. The company produces only when it receives orders and, therefore, has no inventories. The following information is available for the curent month: Actual (based onMaster Budget (based actual orders for on budgeted orders for 450,000 units) 480,000 unts) Sales revenue Less Variable costs 1,536,000 266,000 579,500 1,536,000 36,000 528,000 Materials Direct labor Variable overhead Variable markating and administrative Total variable costs 800,500 Contnibution margin Less Fixed costs 628,200 170,000 140,000 600,000 170,000 Marketing Total fooed costs $ 598,000 Operating profits 5 753,300 Required: Prepare a sales activity variance analysis for Osage, Inc., (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 Actrvity Variance Flexible Sales Activity Master Sales revenue Variable costs Materials Direct labor Variable overhead variable marketing and administrative Total variable costs Contribution margin Fixed costs Marketing Total ted costs Operating profits