(A) In general The requirements of this paragraph are met if a plan amendment to the terminated plan is adopted in connection with the termination of the plan which provides pro rata increases in the accrued benefits of all qualified participants which—
(i) have an aggregate present value not less than 20 percent of the maximum amount which the employer could receive as an employer reversion without regard to this subsection, and
(ii) take effect immediately on the termination date.
(B) Pro rata increase For purposes of subparagraph (A), a pro rata increase is an increase in the present value of the accrued benefit of each qualified participant in an amount which bears the same ratio to the aggregate amount determined under subparagraph (A)(i) as—
(i) the present value of such participant's accrued benefit (determined without regard to this subsection), bears to
(ii) the aggregate present value of accrued benefits of the terminated plan (as so determined).
Notwithstanding the preceding sentence, the aggregate increases in the present value of the accrued benefits of qualified participants who are not active participants shall not exceed 40 percent of the aggregate amount determined under subparagraph (A)(i) by substituting "equal to" for "not less than".