(1) Assets deposited in trusts established pursuant to 33-2-1216(5), MCA, shall be valued according to their current fair market value and shall consist only of:
(a) cash in U.S. dollars;
(b) certificates of deposit issued by a U.S. financial institution; and
(c) investments of the type specified in ARM 6.6.3826 through 6.6.3832.
(2) No more than 20% of the total of the investments in the trust may be foreign investments, and no more than 10% of the total of the investments in the trust may be securities denominated in foreign currencies. For purposes of applying the preceding sentence, a depository receipt denominated in U.S. dollars and representing rights conferred by a foreign security shall be classified as a foreign investment denominated in a foreign currency.