Omega Arts is a manufacturer of designer vases. The cost of each vase is the sum of three variable costs (direct material costs, direct manufacturing labor costs, and manufacturing overhead costs) and one fixed-cost category (manufacturing overhead costs). Variable manufacturing overhead cost is allocated to each vase on the basis of budgeted direct manufacturing labor-hours per vase. For December 2023, each vase is budgeted to take 4 laborhours. Budgeted variable manufacturing overhead cost per labor-hour is $14. The budgeted number of vases to be manufactured in December 2023 is 1,100 . Actual variable manufacturing costs in December 2023 were $65,205 for 1,150 vases started and completed. There were no beginning inventories or ending inventories for the vases. Actual direct manufacturing labor-hours for December were 4,830. Required: 1. Compute the flexible-budget variance, the spending variance, and the efficiency variance for variable manufacturing overhead. 2. Comment on the results. Scenario 6b. Continue with Scenario 6a. Omega Arts allocates fixed manufacturing overhead to each vase using budgeted direct manufacturing labor-hours per vase. Data pertaining to fixed manufacturing overheads for December 2023, are budgeted $70,400 and actual $72,200. Required: 1. Compute the spending variance for fixed manufacturing overhead. Comment on the results. 2. Compute the production-volume variance for December 2023. What inferences can Omega Arts draw from this variance