; (iii) is employed in a public service job at the time of such forgiveness; and (iv) has been employed in a public service job during the period in which the borrower makes each of the 120 payments described in clause (ii). (B) Qualifying monthly payment In this paragraph, the term qualifying monthly payment means— (i) (I) an initial monthly payment that was— (aa) made under any repayment plan that is not described in clause (i), (ii), or (iii) of paragraph (1)(A); and (bb) of an amount that is not less than— (AA) the monthly amount that the borrower is required to pay in the repayment plan based on income described in subparagraph (A)(i); or (BB) the monthly amount that the borrower would have been required to pay if the borrower had entered a repayment plan based on income under subsection (e) or section 493C at the time the borrower entered the repayment plan described in item (aa); and (II) every subsequent monthly payment that the borrower made after the initial payment described in subclause (I) and before the borrower entered the repayment plan based on income described in subparagraph (A)(i); or (ii) a monthly payment certified through the extended review process described in subparagraph (C). (C) Qualifying monthly payment through extended review (i) In General A borrower who has not made 120 qualifying monthly payments, as defined in subparagraph (B)(i), may request that the Secretary complete an extended review of the borrower's repayment history. (ii) Extended review If the Secretary receives a request for an extended review described in clause (i), the Secretary shall— (I) for each month of past payments made under a plan that is not described in clause (i), (ii), or (iii) of paragraph (1)(A) after October 1, 2007, determine the amount that the borrower would have been required to pay in that month (based on the borrower's income in that year or month) if the borrower had been on the repayment plan based on income described in subparagraph (A)(i) in that month