Okla. Stat. tit. 6, § 6-1734: Fiduciary investment standards - Designation of law

governing.

Any trust institution that maintains a trust office or

representative trust office in this state and its affected clients

may designate this state, a state where affected clients reside, or

the state where such trust institution has its principal office, as

the state whose laws shall govern with respect to the fiduciary

investment standards applicable to any written agreement between

such trust institution or its client and any other instrument under

which the trust institution acts for a client.