Stiller Corporation budgeted and incurred fixed manufacturing costs of $24,000 during 2015. Other information for 2015 includes: The budgeted denominator level is 2,000 units. Units produced total 1,500 units. Units sold total 1,200 units. Beginning inventory was zero. The company uses absorption costing and the fixed manufacturing cost rate is based on the budgeted denominator level. Manufacturing variances are closed to cost of goods sold. The production-volume variance is $6000 favorable $9,600 unfavorable $6,000 unfavorable $8,000 favorable