(a) General rule.--All cost and expenses incurred in a proceeding described in section 906 (relating to contest of reapportionment by governing body) challenging a reapportionment shall be paid by the entity or the petitioners as the court directs, but, if the court reapportions the entity, the costs and expenses shall be paid by the entity.
(b) Bond to secure payment.--If a reapportionment is challenged by petition as described in section 906, the petitioners may be required to post a bond set by the court to secure the payment of costs and expenses.