The following journal entry would be made in a processing costing system when units that have been completed in the final processing department. a) Debit Work in Process Inventory; Credit Finished Goods Inventory b) Debit Finished Goods Inventory; Credit Work in Process Inventory c) Debit Cost of Goods Sold; Credit Finished Goods Inventory d) Debit Finished Goods Inventory; Credit Cost of Goods Sold