; and (II) is the primary caregiver for a minor child who— (aa) is living with the individual; (bb) does not have a parent living in the home; and (cc) is a grandchild, stepgrandchild, or other first-degree, second-degree, third-degree, fourth-degree, or fifth-degree relative of the individual or the individual's spouse. (ii) State option to modify age criterion At the option of a State, such term shall include an individual who has not attained age 55. (iii) Determination to be made by State The determination of whether an individual meets the criteria described in clause (i)(II) shall be made by the State. (C) Definition of caregiver relative caring for a child with a disability (i) In general For purposes of this paragraph, the term caregiver relative caring for a child with a disability means an individual, regardless of age, who is the primary caregiver for a minor child who— (I) is living with the individual; (II) is a child, grandchild, stepgrandchild, or other first-degree, second-degree, third-degree, fourth-degree, or fifth-degree relative of the individual or the individual's spouse