(C) For a displaced person who is not eligible to receive a replacement housing payment because of the person's failure to meet length-of-occupancy requirements, comparable replacement rental housing is considered to be within the person's financial means if an Agency pays that portion of the monthly housing costs of a replacement dwelling which exceeds the person's base monthly rent for the displacement dwelling as described in § 24.402(b)(2). Such rental assistance must be paid under § 24.404, Replacement housing of last resort.