(a) Except as otherwise provided in subsection (b), a trustee 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 article.
(b) The prudent investor rule, a default rule, may be expanded, restricted, eliminated, or otherwise altered by the terms of a trust. A trustee is not liable to a beneficiary to the extent that the trustee acted in reasonable reliance on the terms of the trust.