Odessa, inc., reports the following information concerning operations for the most recent month: actual (based on actual of 540 units) master budget (based on budgeted 600 units) sales revenue $ 88,320 $ 96,000 less manufacturing costs direct labor 13,632 14,400 materials 11,520 13,440 variable overhead 7,872 9,600 marketing 5,088 5,760 administrative 4,800 4,800 total variable costs $ 42,912 $ 48,000 contribution margin $ 45,408 $ 48,000 fixed costs manufacturing 4,665 4,800 marketing 9,984 9,600 administrative 9,561 9,600 total fixed costs $ 24,210 $ 24,000 operating profits $ 21,198 $ 24,000 there are no inventories. required: prepare a sales activity variance analysis for odessa, inc