A customer returned $600 worth of supplies inventory to Stationary Inc which they purchased on account and had not yet paid. Which of the following represents the necessary journal entry Stationary Inc would make for this transaction? a. Db. Supplies 600 Cr. Accounts Receivable 600 b. Db. Cash 600 Cr. Supplies 300 Cr. Accounts Receivable 300 O c. Db. Supplies 600 Cr. Accounts Payable 300 Cr. Cash 300 O d. Db. Supplies 600 Cr. Assets Returned (Equity) 600