Top managers of Rouse Industries predicted 2024 sales of 15,000 units of its product at a unit price of $10.00. Actual sales for the year were 14,900 units at $11.50 each. Variable costs were budgeted at $2.60 per unit, and actual variable costs were $2.70 per unit. Actual fixed costs of $47,000 exceeded budgeted fixed costs by $2,000. Prepare Rouse's flexible budget performance report. What variance contributed most to the year's favorable resuits? What caused this variance