(a) Subject to the intent of a donor expressed in the gift instrument, an institution may appropriate for expenditure or accumulate so much of an endowment fund as the institution determines is prudent for the uses, benefits, purposes, and duration for which the endowment fund is established. This section does not limit the authority of the institution to expend funds as permitted under other law, the terms of the gift instrument, or the charter of the institution. Unless stated otherwise in the gift instrument, the assets in an endowment fund are donor-restricted assets (regardless of their treatment for accounting purposes) until appropriated for expenditure by the institution. In making a determination to appropriate or accumulate, the institution shall act in good faith, with the care that an ordinarily prudent person in a like position would exercise under similar circumstances, and shall consider, if relevant, the following factors:
(1) The duration and preservation of the endowment fund;