A consumer reporting agency shall, upon request and proper identification of a consumer, provide the consumer: An exact copy of any file on that consumer except any part of the file which contains medical information; A written explanation of codes or trade language used; A description of the rights of the consumer under this subtitle; and The name, address, and telephone number of the Commissioner. Whenever access to a file or a copy of a file has been furnished to a consumer, the consumer reporting agency may delete the sources of information acquired solely for use in an investigative report and used for no other purpose. If any action is brought by the consumer under this subtitle, the consumer reporting agency shall make such sources available to the plaintiff under appropriate discovery procedures.