Sec. 5. As used in this chapter, "cost of divestment" means the sum of the following:
(1) The costs associated with the sale, redemption, divestment, or withdrawal of an investment.
(2) The costs associated with the acquisition and maintenance of a replacement investment.
(3) A cost not described in subdivision (1) or (2) that is incurred by the system in connection with a divestment transaction.