Sec. 4. (a) Except as provided in subsections (b) and (c), relators, persons, and corporations for whose use an action is brought, whether such use is shown by the pleadings of the plaintiff or defendant, are liable for costs jointly with the actual parties to the action.
(b) Except as provided in subsection (c), when the state is plaintiff, the relator only is liable, and judgment for costs shall be rendered accordingly.
(c) When a state officer or prosecuting attorney, by virtue of his or her office, is a relator for the state of Indiana, the relator is not liable for costs.