Identify the most likely role in an accounting system played by each of the numbered items 1 through 12 by assigning a letter from the list A through E on the left.
A. Source documents
B. Input devices
C. Information processors
D. Information storage
E. Output devices
_______ 1. Bar code reader
_______ 2. Filing cabinet
_______ 3. Bank statement
_______ 4. Computer scanner
_______ 5. Computer keyboard
_______ 6. Zip drive
_______ 7. Computer monitor
_______ 8. Invoice from a supplier
_______ 9. Computer software
_______ 10. Computer printer
_______ 11. Digital camera
_______ 12. MP3 player