(a) Unless the terms of the trust instrument provide otherwise, and subject to the investment standards provided by this subtitle and any investment standards provided by the trust instrument, the trustee may invest all or part of the trust assets in an investment vehicle authorized for the collective investment of trust funds pursuant to Part 9, Title 12, of the Code of Federal Regulations.
(d) Subject to any investment standards provided by this chapter, Chapter 117, or the trust instrument, whenever the instrument directs, requires, authorizes, or permits investment in obligations of the United States government, the trustee may invest in and hold such obligations either directly or in the form of interests in an open-end management type investment company or investment trust registered under the Investment Company Act of 1940, 15 U.S.C. 80a-1 et seq., or in an investment vehicle authorized for the collective investment of trust funds pursuant to Part 9, Title 12 of the Code of Federal Regulations, so long as the portfolio of such investment company, investment trust, or collective investment vehicle is limited to such obligations and to repurchase agreements fully collateralized by such obligations.