The XTRA Appliance Manufacturing Corporation manufactures two vacuum cleaners, the Standard and the Super. The following information was gathered about the two products: Standard Super Budgeted sales in units 3,200 800 Budgeted selling price $600 $1.700 Budgeted contribution margin per unit $420 $1.100 Actual sales in units 3.500 1.500 Actual selling price $650 $1,680 What is the total sales-quantity variance in terms of the contribution margin? $220,000 favorable $340,000 favorable $556,000 favorable $896,000 favorable