Standard 2,400 The Corata Appliance Manufacturing Corporation manufactures two vacuum cleaners, the Standard and the Super. The following information was gathered about the two products: Budgeted sales in units Super 610 Budgeted selling price $600 $1,700 Budgeted contribution margin per unit $430 $1,060 Actual sales in units 2,800 1,300 Actual selling price $650 $1.680 What is the total sales-volume variance in terms of the contribution margin? OA. $731,400 unfavorable OB. $559,400 favorable OC. $903,400 unfavorable OD. $903,400 favorable