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 Budgeted selling price Budgeted contribution margin per unit Actual sales in units Actual selling price Standard Super 2,400 650 $600 $1,700 $430 $1,080 3,000 1,300 $650 $1,680 What is the total sales-volume variance in terms of the contribution margin? OA. $702.000 unfavorable OB. $960,000 unfavorable OC. $960,000 favorable OD. $444,000 favorable