; (ii) demonstrates compelling circumstances for the inability to satisfy the requirements under subparagraph (C) of such paragraph; and (iii) demonstrates that— (I) the alien has a disability; (II) the alien is a full-time caregiver of a minor child; or (III) the removal of the alien from the United States would result in extreme hardship to the alien or the alien’s spouse, parent, or child who is a national of the United States or is lawfully admitted for permanent residence. (3) Citizenship requirement (A) In general Except as provided in subparagraph (B), the conditional basis of an alien’s permanent resident status granted under this Act may not be removed unless the alien demonstrates that the alien satisfies the requirements under section 312(a) of the Immigration and Nationality Act ( 8 U.S.C. 1423(a) ). (B) Exception Subparagraph (A) shall not apply to an alien who is unable to meet the requirements under such section 312(a) due to disability. (4) Application fee (A) In general The Secretary may require aliens applying for lawful permanent resident status under this section to pay a reasonable fee that is commensurate with the cost of processing the application. (B) Exemption An applicant may be exempted from paying the fee required under subparagraph (A) if the alien— (i) (I) is younger than 18 years of age; (II) received total income, during the 12-month period immediately preceding the date on which the alien files an application under this section, that is less than 150 percent of the poverty line; and (III) is in foster care or otherwise lacking any parental or other familial support; (ii) is younger than 18 years of age and is homeless; (iii) (I) cannot care for himself or herself because of a serious, chronic disability; and (II) received total income, during the 12-month period immediately preceding the date on which the alien files an application under this section, that is less than 150 percent of the poverty line