(a) Except as otherwise provided in subsection (b), a fiduciary who invests and manages trust assets owes a duty to the beneficiaries of the trust to comply with the prudent investor rule set forth in this act.
(b) The prudent investor rule, a default rule, may be expanded, restricted, eliminated or otherwise altered by the provisions of a trust. A fiduciary is not liable to a beneficiary to the extent that the fiduciary acted in reasonable reliance on the provisions of the trust.
(c) As used in this act, "fiduciary" means a personal representative or a trustee. The term includes an executor, administrator, successor personal representative, special administrator, and a person performing substantially the same function.