In general
For purposes of this subsection, the term “low-income benchmark premium amount” means, with respect to a PDP region in which—
(i)#
all prescription drug plans are offered by the same PDP sponsor, the weighted average of the amounts described in subparagraph (B)(i) for such plans; or
(ii)#
there are prescription drug plans offered by more than one PDP sponsor, the weighted average of amounts described in subparagraph (B) for prescription drug plans and MA–PD plans described in section 1395w–21(a)(2)(A)(i) of this title offered in such region.