E21.15 (LO 3,4) Santana Mortgage Company uses a process cost system to accumulate costs in its Application Department. When an application is completed, it is forwarded to the Loan Department for final processing. The following processing and cost data pertain to September. Materials are the forms used in the application process, and these costs are incurred at the beginning of the process. Conversion costs are incurred uniformly during the process. Instructions a. Determine the equivalent units of service (production) for materials and conversion costs. b. Compute the unit costs and prepare a cost reconciliation schedule