(a) To the extent authorized by court rules, the court shall award the prevailing party, including a state, necessary and reasonable expenses incurred by or on behalf of the party, including costs, communication expenses, attorney fees, investigative fees, expenses for witnesses, travel expenses, and child care expenses incurred during the course of the proceedings, unless the party from whom costs, fees, or expenses are sought establishes that the award would be clearly inappropriate.
(b) The court may not assess costs, fees, or expenses against a state unless authorized by law other than this chapter or by court rule.