Porter Pharmacy uses the following journals: sales journal, purchases journal, cash receipts journal, cash disbursements journal, and general journal. On June 5, Porter purchased merchandise priced at $12,000, subject to credit terms of 2/10, n/30. On June 14, the pharmacy paid the net amount due for the merchandise. In journalizing the payment, the pharmacy debited Accounts Payable for $12,000 but failed to record the cash discount on the purchases. Cash was properly credited for the actual $11,760 paid. (a) In what journals would the June 5 and the June 14 transactions be recorded?
(b) What procedure is likely to discover the error in journalizing the June 14 transaction?