Interests in any open-end management type investment company or investment trust (hereafter referred to as a “mutual fund”) registered under the Investment Company Act of 1940, the investments of which are not restricted to the investments otherwise authorized for representatives in Sections 21-2.01 through 21-2.13 and 21-2.15, including without limitation a mutual fund that receives services from or pays fees to the representative or its affiliate, provided that the investment in the mutual fund or funds meets the standard of the prudent investor rule for the investment of trust funds. A representative or its affiliate is not required to reduce or waive its compensation for services provided in connection with the investment and administration of the estate because the representative invests, reinvests, or retains estate assets in a mutual fund for which it or its affiliate provides services and receives compensation if the total compensation paid by the estate as fees of the representative and mutual fund fees, including any advisory or management fees, is reasonable. However, a representative may receive fees equal to the amount of those fees that would be paid to any other party under Securities and Exchange Commission Rule 12b-1.