((a)) There are hereby authorized to be appropriated such sums as may from time to time be necessary to carry out this chapter, including sums—
((1)) to cover administrative expenses authorized under ;
((2)) to reimburse the National Flood Insurance Fund established under for—
((A)) premium equalization payments under which have been made from such fund; and
((B)) reinsurance claims paid under the excess loss reinsurance coverage provided under ; and
((3)) to make such other payments as may be necessary to carry out the purposes of this chapter.
((b)) All such funds shall be available without fiscal year limitation.
((c)) There are authorized to be appropriated such sums as may be necessary through the date specified in , for studies under this chapter.