C. If all devisees whose devises are to be funded from the residue of an estate agree, in a written instrument signed by each of them and presented to the personal representative, on an investment manager to direct the investment of the estate's residuary assets, the personal representative may, but need not, rely on the investment advice of the investment manager so identified or delegate the investment management of the estate's residuary assets to the investment manager and, in either case, may pay reasonable compensation to the investment manager from the residue of the estate. A personal representative who relies on the advice of, or delegates management discretion to, an investment manager in accordance with the terms of this section is not liable for the investment performance of the assets invested in the discretion of, or in accordance with the advice of, the investment manager. [2017, c. 402, Pt. A, §2(NEW); 2019, c. 417, Pt. B, §14(AFF).] [2017, c. 402, Pt. A, §2(NEW); 2019, c. 417, Pt. B, §14(AFF).]