; and (II) not later than 45 days after receipt of such application, make a determination in accordance with section 121 on whether to provide such approval. (ii) Estimated timeline If the Administrator does not make a determination under clause (i)(II) within 45 days of receipt of the application under section 121(a), the Administrator shall provide the applicant with— (I) a written explanation for the delay; and (II) an estimated timeline for a determination that does not exceed 90 days after the date of such written explanation. (C) National occupational standards (i) In general From the funds appropriated under section 141(a), the Administrator shall convene, on an ongoing basis and taking into consideration recommendations of the Advisory Committee under section 112(d)(4), the industry sector leaders and experts described in clause (ii) for the purposes of establishing or updating specific frameworks of national occupational standards for occupations suitable for apprenticeship (including potential occupations) that— (I) meet the requirements of this Act