18. Lobbyists shall be diligent and cooperative in their relations with the Lobbyists Commissioner and the Lobbyists Registrar. They shall particularly, within reasonable time,
(1) answer any request for particulars relating to the information entered or to be entered in the registry of lobbyists;
(2) upon request, amend or clarify any return, notice or request that is incomplete or is not in conformity with the Lobbying Transparency and Ethics Act (chapter T-11.011) or the regulations thereunder;
(3) answer any request addressed to them by the Lobbyists Commissioner in the course of an inquiry or inspection.