Step 1: Understanding POS system.
POS (Point of Sale) system is used in retail to complete a transaction from product selection to payment and billing.
Step 2: Identifying correct sequence.
- First, items are scanned.
- Then, the customer makes payment.
- After payment, the system prints the bill.
- Finally, the cash drawer opens to store cash.
Step 3: Conclusion.
Thus, the correct sequence is option (A).
Final Answer:} Scanning, Receiving payments, Printing bills, Cash drawer.