((a)) ** Insufficient elderly families** If an owner of a covered section 8 housing project in which elderly families are given a preference for occupancy pursuant to determines (in accordance with regulations established by the Secretary) that there are insufficient numbers of elderly families who have applied for occupancy in the housing to fill all the units in the project not reserved under , the owner may give preference for occupancy of such units to disabled families who are near-elderly families and have applied for occupancy in the housing.section 13611 of this titlesection 13612 of this title

((b)) ** Insufficient non-elderly disabled families** If an owner of a covered section 8 housing project in which elderly families are given a preference for occupancy pursuant to determines (in accordance with regulations established by the Secretary) that there are insufficient numbers of disabled families who are not elderly or near-elderly families and have applied for occupancy in the housing to fill all the units in the project reserved under , the owner may give preference for occupancy of units so reserved to disabled families who are near-elderly families and have applied for occupancy in the housing.section 13611 of this titlesection 13612 of this title