The term "bank" means:

                (A) a banking institution organized under the laws of the United States,

                (B) a member bank of the Federal Reserve System,

                (C) any other banking institution, whether incorporated or not, doing business under the laws of any State or of the United States, a substantial portion of the business of which consists of receiving deposits or exercising fiduciary powers similar to those permitted to national banks under the authority of the Comptroller of the Currency pursuant to the first section of Public Law 87-722, and which is supervised and examined by State or Federal authority having supervision over banks, and which is not operated for the purpose of evading the provisions of this title, and

                (D) a receiver, conservator, or other liquidating agent of any institution or firm included in clauses (A), (B), or (C) of this paragraph.