Limited operates a standard cost accounting system. The following information has been extracted from its standard cost card and budgets: Budgeted sales volume Budgeted selling price Standard variable cost 5,000 units 10.00 per unit 5.60 per unit Standard total cost 7.50 per unit If the actual sales were 4,500 units at a selling price of 12.00, its sales volume variance would be: a. 3,200 adverse Ob. 1,250 adverse Oc. 2,250 adverse Od. 2,200 adverse