Endowment care funds shall be kept invested in accordance with the provisions of RCW
11.100.020 subject to the following restrictions:
(1) No officer or director of the cemetery authority, trustee of the endowment care or special care funds, or spouse, sibling, parent, grandparent, or issue of such officer, director, or trustee, shall borrow any of such funds for himself or herself, directly or indirectly.
(2) No funds shall be loaned to the cemetery authority, its agents, or employees, or to any corporation, partnership, or other business entity in which the cemetery authority has any ownership interest.
(3) No funds shall be invested with persons or business entities operating in a business field directly related to cemeteries, including, but not limited to, mortuaries, monument production and sales, florists, and rental of funeral facilities.
(4) Notwithstanding any other provisions contained in this section, funds may be invested in any commercial bank, mutual savings bank, or savings and loan association duly chartered and operating under the laws of the United States or statutes of the state of Washington.