Concept:MICR technology uses magnetic ink to read data printed on financial documents.
Explanation:MICR stands for Magnetic Ink Character Recognition.
This technology is mainly used in the banking sector.
It reads the special characters printed at the bottom of bank cheques.
These characters contain the cheque number, account number, and bank details.
MICR helps in fast and secure processing of cheques.
It is not used for postal orders, answer sheets, or bank teller machines.
Bank teller is a person or a machine, not a document with codes.
Therefore, MICR reads codes on bank cheques.
Answer:D. bank cheques