(a) Hearings shall be reported and transcribed verbatim, stenographically or otherwise, and the original transcript shall be part of the record and the sole official transcript. Copies of the record shall be filed with the hearing clerk and made available during Agency business hours for public inspection. Any person who desires a copy of the record of the hearing or any part of it shall be entitled to it upon payment of the cost.(b) The official transcripts and exhibits, together with all papers and requests filed in the proceeding, shall constitute the record.