Identify the most likely role in an accounting system played by each of the numbered items 1 through 10 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. Computer keyboard
2. Computer printer
3. Computer monitor
4. Bank statement
5. Computer software
6. Bar code reader
7. Digital camera
8. Invoice from a supplier
9. Computer scanner
10. Filing cabinet