A. Except as provided in Subsection B, the provisions of this Subpart shall apply only if the trust has but one settlor.
B. If a trust is created by two settlors who are married to each other, and the trust instrument divides community property in the manner described in R.S. 9:1955, and the trust becomes irrevocable as to a spouse's share or trust no later than at the death of that spouse, the beneficiaries of such share or trust may be ascertained under the provisions of this Subpart.