; (B) any subsequent calculation of income performed with respect to households receiving ongoing assistance shall consider only the income that the household is receiving at the time of the review; and (C) the calculation of income performed with respect to households receiving assistance for arrearages shall consider only the income that the household was receiving at the time the arrearages were incurred. (e) 3-year availability (1) In general Each recipient of amounts made available pursuant to subsection (b) shall— (A) expend not less than 60 percent of the grant amounts within 2 years of the date on which the funds became available to the recipient for obligation