; (ii) has filed an application for child's insurance benefits; and (iii) is a fully insured individual (as defined in section 214(a)) at the time of such filing; such application shall be deemed to be an application for both child's insurance benefits under this subsection and old-age insurance benefits under section 202(a). (C) Notwithstanding paragraph (1), in the case of a child described in subparagraph (A) or (B), if, at the time of filing an application for child's insurance benefits, the amount of the monthly old-age or disability insurance benefit to which the child would be entitled is greater than the amount of the monthly child's insurance benefit to which the child would be entitled, the child shall not be entitled to a child's insurance benefit based on such application. (D) For purposes of subparagraph (C), the amount of the monthly old-age or disability benefit to which the child would be entitled shall be determined— (i) without regard to the primary insurance amount calculation described in section 215(a)(7); and (ii) before application of section 224. (12) For purposes of paragraph (1)(B)(ii), a child shall not be required to be continuously under a disability during the period between the date that the disability began and the date that the application for child’s insurance benefits is filed. . (b) Effective date The amendments made by this section shall apply to applications filed on or after the date that is 24 months after the date of the enactment of this section.