; or (ii) the income-based repayment plan under section 493C(f). (B) Selection by the secretary If a borrower of a loan made under this part on or after July 1, 2019, does not select a repayment plan described in subparagraph (A), the Secretary may provide the borrower with a fixed repayment plan described in section 493E. (C) Changes in selections Beginning on July 1, 2019, a borrower of a loan made under this part may change the borrower’s selection of a repayment plan in accordance with paragraph (7) and under such terms and conditions as may be established by the Secretary. ; (3) in paragraph (6)(B), as redesignated, by striking an income contingent repayment plan. and inserting the income-based repayment plan under section 493C(f). ; and (4) by adding at the end the following: (7) Borrowers of loans made before july 1, 2019 A borrower who is in repayment on a loan made under part B or part D before July 1, 2019— (A) may choose to retain the repayment plan that the borrower was enrolled in on the day before such date; (B) may elect to— (i) enter the income-based repayment plan under section 493C(f); or (ii) enter a fixed repayment plan described in section 493E; (C) after electing to leave a repayment plan other than an income-based repayment plan described under this subsection or a fixed repayment plan described in section 493E, shall not be permitted to re-elect a repayment plan that is not an income-based repayment plan under this subsection or a fixed repayment plan described in section 493E