Determination of substantial increase for benefits, rights, and features
In applying subparagraph (C)(ii) for purposes of subparagraph (A)(iii), a plan shall be treated as having had a substantial increase in coverage or value of the benefits, rights, or features described in subparagraph (A) during the applicable 5-year period only if, during such period—
(i)#
the number of participants covered by such benefits, rights, or features on the date such period ends is more than 50 percent greater than the number of such participants on the first day of the plan year in which such period began, or
(ii)#
such benefits, rights, and features have been modified by 1 or more plan amendments in such a way that, as of the date the class is closed, the value of such benefits, rights, and features to the closed class as a whole is substantially greater than the value as of the first day of such 5-year period, solely as a result of such amendments.