Instructions: Rule 1: All incoming invoices must be stamped with the current date and placed in the 'AP' (Accounts Payable) tray. Rule 2: All incoming resumes must be forwarded to the 'HR' (Human Resources) department via email immediately. Do not place a physical copy anywhere. Rule 3: All general correspondence addressed to a specific employee should be placed in that employee's personal mailbox. Rule 4: Any package larger than a standard envelope must be logged in the 'Package Logbook' before being delivered to the recipient's department. Rule 5: If a piece of mail is marked 'Confidential,' it must be hand-delivered to the recipient and not left in their mailbox. Rule 6: Any mail with insufficient postage should be returned to the sender using a 'Return to Sender' sticker. Question: You receive a standard envelope containing an invoice for office supplies. What is the correct first step?
