In the case of an interest in an inter vivos trust:
(1) a disclaimer must be delivered to the trustee then serving, or, if no trustee is then serving, a disclaimer must be filed:
(A) with a court having jurisdiction to enforce the trust; or
(B) in the official public records of the county in which:
(i) the situs of administration of the trust is maintained; or
(ii) the settlor is domiciled or was domiciled on the date of the settlor's death; and
(2) if a disclaimer is made before the time the instrument creating the trust becomes irrevocable, a disclaimer must be delivered to the settlor of a revocable trust or the transferor of the interest.