(A) A provision in the terms of a trust, excluding a testamentary trust, that requires the arbitration of disputes, other than disputes of the validity of all or a part of a trust instrument, between or among the beneficiaries and a fiduciary under the trust, or a combination of those persons or entities, is enforceable.
(B) Unless otherwise specified in the terms of the trust, a trust provision requiring arbitration as described in division (A) of this section shall be presumed to require binding arbitration under Chapter 2711. of the Revised Code.