Which of the following is the formula for the sales-quantity variance?
◦ deducting budgeted contribution margin based on actual units at actual mix from budgeted contribution margin based on actual units sold at the actual mix
◦ deducting budgeted contribution margin based on actual units at actual mix from budgeted contribution margin based on actual units sold at the budgeted mix
◦ deducting budgeted contribution margin based on budgeted units at actual mix from budgeted contribution margin based on actual units sold at the budgeted mix
◦ deducting budgeted contribution margin based on budgeted units at budgeted mix from budgeted contribution margin based on actual units sold at the budgeted mix