State the items from Figure 2 that should be written in place of the labels L1, L2, L3, and L4 in the algorithm shown in Figure 1.

You do not need to use all the items in Figure 2.

Figure 1: Stock Verification Algorithm

transactionComplete ← False
REPEAT
    scannedBarcode ← ""
    WHILE scannedBarcode = ""
        OUTPUT "Please scan item barcode: "
        scannedBarcode ← L1
    ENDWHILE

    databaseRecord ← fetchRecord(L2)
    IF databaseRecord = L3 THEN
        OUTPUT "Item not in database."
    ELSE
        stockCount ← getStockCount(databaseRecord)
        IF stockCount = 0 THEN
            OUTPUT L4
        ELSE
            OUTPUT "Item processed successfully."
            transactionComplete ← True
        ENDIF
    ENDIF
UNTIL transactionComplete = True

Figure 2: Available Items

• L1:
• L2:
• L3:
• L4: