(1) If the court hearing the proceedings may order that the defendant pay all or any of those costs to the plaintiff.(a) a defendant in proceedings involving an apportionable claim has reasonable grounds to believe that a particular person (the "other person" ) may be a concurrent wrongdoer in relation to the claim; and(b) the defendant fails to give the plaintiff, as soon as practicable, written notice of the information that the defendant has about (i) the identity of the other person; and(ii) the circumstances that may make the other person a concurrent wrongdoer in relation to the claim; and(c) the plaintiff unnecessarily incurs costs in the proceedings because the plaintiff was not aware that the other person may be a concurrent wrongdoer in relation to the claim (2) The court may order that the costs to be paid by the defendant be assessed on an indemnity basis or otherwise.