are only a 10-year fixed repayment plan and the repayment plan under this section. If the borrower of the loan does not select a repayment plan, the repayment of such loan shall be made in accordance with this section. A borrower of a loan made under this part after the date of enactment of the LOAN Act of 2019 may affirmatively select the repayment plan under this section. (2) Regulations Not later than 18 months after the date of enactment of the LOAN Act of 2019, the Secretary shall promulgate rules— (A) outlining how the Department will implement the income dependent education assistance repayment plan requirements for borrowers under this section