(a) Denial by a public body of a request for any public record shall contain at least the following:
(1) The specific reasons for the denial, including citations to the particular exemption(s) under § 2-534 relied on as authority for the denial;
(2) The name(s) of the public official(s) or employee(s) responsible for the decision to deny the request; and
(3) Notification to the requester of any administrative or judicial right to appeal under § 2-537.
(b) Each public body of the District of Columbia shall maintain a file of all letters of denial of requests for public records. This file shall be made available to any person on request for purposes of inspection and/or copying.