(a) The district attorney of the judicial circuit in which delinquency or child in need of supervision cases are filed may exercise his or her authority in all delinquency and child in need of supervision cases arising pursuant to this chapter.
(b) The juvenile court may call upon the district attorney to assist the juvenile court in any proceeding pursuant to this chapter. It shall be the duty of the district attorney to render this assistance when so requested.
(c) Notwithstanding Title 36, the district attorney shall represent the state in all delinquency and child in need of supervision cases appealed from the juvenile court.