4-22 Actual costing, normal costing, accounting for manufacturing overhead. Carolin Chemicals produces a range of chemical products for industries on getting bulk orders. It uses a job-costing system to calculate the cost of a particular job. Materials and labors used in the manufacturing process are direct in nature, but manufacturing overhead is allocated to different jobs using direct manufacturing labor costs. Carolin provides the following information: 1. Compute the actual and budgeted manufacturing overhead rates for 2021. 2. During March, the job-cost records for Job 635 , contained the following information: Compute the cost of Job 635 using (a) actual costing and (b) normal costing. 3. At the end of 2021, compute the under- or overallocated manufacturing overhead under normal costing. Why is there no under- or overallocated overhead under actual costing? Why might managers at Carolin Chemicals prefer to use normal costing