Diversification of investments.—

A plan meets the requirements of this subparagraph if each qualified participant in the plan may elect within 90 days after the close of each plan year in the qualified election period to direct the plan as to the investment of at least 25 percent of the participant’s account in the plan (to the extent such portion exceeds the amount to which a prior election under this subparagraph applies). In the case of the election year in which the participant can make his last election, the preceding sentence shall be applied by substituting “50 percent” for “25 percent”.

A plan shall be treated as meeting the requirements of clause (i) if—

(I) the portion of the participant’s account covered by the election under clause (i) is distributed within 90 days after the period during which the election may be made, or

(II) the plan offers at least 3 investment options (not inconsistent with regulations prescribed by the Secretary) to each participant making an election under clause (i) and within 90 days after the period during which the election may be made, the plan invests the portion of the participant’s account covered by the election in accordance with such election.

For purposes of this subparagraph, the term “qualified participant” means any employee who has completed at least 10 years of participation under the plan and has attained age 55.

For purposes of this subparagraph, the term “qualified election period” means the 6-plan-year period beginning with the later of—

(I) the 1st plan year in which the individual first became a qualified participant, or

(II) the 1st plan year beginning after December 31, 1986 .