As a convention, an increase in assets is debited to the left side of the T-account. The following schematic diagram illustrates product costing: Stores WIP FG Debit Credit Debit Credit Debit Credit (1) (2) (3) (4) (5) (6) When $XXX of raw materials has been used and moved to be processed, how is this transaction recorded? O a. Credit WIP (4) and Debit FG (5) O b. Credit Stores (2) c. Credit Stores (2) and Debit WIP (3) d. Debit WIP (3)