P8-1A Luby Office Supply Company recently changed its system of internal control over cash Identify internal control princidisbursements. The system includes the following features. Ples over cash disbursements.

Instead of being unnumbered and manually prepared, all checks must now be prenumbered (SO 2, 4)

and written by using the new checkwriting machine purchased by the company. Before a check can be issued, each invoice must have the approval of Sally Morgan, the purchasing agent, and John Countryman, the receiving department supervisor. Checks must be signed by either Ann Lynn, the treasurer, or Bob Skabo, the assistant treasurer. Before signing a check, the signer is ex¬

pected to compare the amount of the check with the amount on the invoice.

After signing a check, the signer stamps the invoice PAID and inserts within the stamp, the date, check number, and amount of the check. The “paid” invoice is then sent to the accounting department for recording.

Blank checks are stored in a safe in the treasurer’s office. The combination to the safe is known only by the treasurer and assistant treasurer. Each month, the bank statement is recon¬

ciled with the bank balance per books by the assistant chief accountant.

Instructions Identify the internal control principles and their application to cash disbursements of Luby Office Supply Company.