Working Group shall be considered established on the date on which a majority of the members of the Davis-Bacon Working Group have been appointed, consistent with subsection (d). (c) Duties The Davis-Bacon Modernization Working Group shall— (1) recommend whether, and if so by how much, the residential classification can be applied to affordable housing units with 5 stories or more for purposes of prevailing wage determinations under subchapter IV of chapter 31 of title 40, United States Code