; and (B) (i) have been unemployed for more than 90 days by demonstrating to the program administrator selected by the grantee involved— (I) that the individual has been registered as unemployed for more than 90 days under a State unemployment insurance system; or (II) through submission of a self-affidavit that demonstrates that the individual has been so unemployed; or (ii) have had earnings for the previous 6 months that are below the poverty line. (4) Placement length (A) In general A period of employment with a participating employer under the program for an individual shall be not longer than 18 months, and not less than 3 months, except that such period— (i) may be shorter in the case of termination of the individual for unsatisfactory performance; (ii) may be extended— (I) for an additional 12-month period in a case in which the eligible individual is pursuing the career and technical education described in paragraph (2); or (II) in the case of an individual with a barrier to employment