; or (II) for enrolling a participant or beneficiary in a default investment fund or option in accordance with this title. (D) A fiduciary shall be jointly and severally liable under subparagraph (A) for a breach of fiduciary duty under subsection (b) by another fiduciary only if— (i) the fiduciary participates knowingly in, or knowingly undertakes to conceal, an act or omission of such other fiduciary, knowing such act or omission is such a breach; (ii) by the fiduciary's failure to comply with subsection (b) in the administration of the fiduciary's specific responsibilities which give rise to the fiduciary status, the fiduciary has enabled such other fiduciary to commit such a breach; or (iii) the fiduciary has knowledge of a breach by such other fiduciary, unless the fiduciary makes reasonable efforts under the circumstances to remedy the breach. (E) The Secretary shall prescribe, in regulations, procedures for allocating fiduciary responsibilities among fiduciaries, including investment managers. Any fiduciary who, pursuant to such procedures, allocates to a person or persons any fiduciary responsibility shall not be liable for an act or omission of such person or persons unless— (i) such fiduciary violated subsection (b) with respect to the allocation, with respect to the implementation of the procedures prescribed by the Secretary, or in continuing such allocation; or (ii) such fiduciary would otherwise be liable in accordance with subparagraph (D). (2) Civil action only as provided No civil action may be maintained against any fiduciary with respect to the responsibilities, liabilities, and penalties authorized or provided for in this section except in accordance with paragraphs (3) and (4). (3) Rules regarding civil actions A civil action may be brought in the district courts of the United States— (A) by the Secretary against any fiduciary other than a Member of the Board or the Chair of the Board— (i) to determine and enforce a liability under paragraph (1)(A)