For the purposes of sections 15c, 15d, 15e, and 15f of this title:

((1)) The term “State attorney general” means the chief legal officer of a State, or any other person authorized by State law to bring actions under , and includes the Corporation Counsel of the District of Columbia, except that such term does not include any person employed or retained on—

((A)) a contingency fee based on a percentage of the monetary relief awarded under this section; or

((B)) any other contingency fee basis, unless the amount of the award of a reasonable attorney’s fee to a prevailing plaintiff is determined by the court under .

((2)) The term “State” means a State, the District of Columbia, the Commonwealth of Puerto Rico, and any other territory or possession of the United States.

((3)) The term “natural persons” does not include proprietorships or partnerships.