; and (II) issue interim final rules under clause (i). In prescribing assumptions under subclause (I), the Secretary may prescribe a single set of specific assumptions (in which case the Secretary may issue tables or factors that facilitate such conversions), or ranges of permissible assumptions. To the extent that an accrued benefit is or may be invested in a lifetime income stream described in clause (i)(III), the assumptions prescribed under subclause (I) shall, to the extent appropriate, permit administrators of individual account plans to use the amounts payable under such lifetime income stream as a lifetime income stream equivalent. (iv) Limitation on liability No plan fiduciary, plan sponsor, or other person shall have any liability under this title solely by reason of the provision of lifetime income stream equivalents which are derived in accordance with the assumptions and rules described in clause (iii) and which include the explanations contained in the model lifetime income disclosure described in clause (ii). This clause shall apply without regard to whether the provision of such lifetime income stream equivalent is required by subparagraph (B)(iii). (v) Effective date The requirement in subparagraph (B)(iii) shall apply to pension benefit statements furnished more than 12 months after the latest of the issuance by the Secretary of— (I) interim final rules under clause (i); (II) the model disclosure under clause (ii); or (III) the assumptions under clause (iii). .