What follows is an opinion from a United States Court of Appeals. Your task is to identify the federal agency (if any) whose decision was reviewed by the court of appeals. If there was no prior agency action, choose "not applicable".

Opinion:
Morvin DUEL, Commissioner of Insurance, Etc., Plaintiff-Appellee, v. NATIONAL SURETY CORPORATION, Defendant-Appellant.
No. 9025.
Circuit Court of Appeals, Seventh Circuit.
Oct. 24, 1946.
J. G. Hardgrove, Paul R. Newcomb, and Bert Vandervelde, all of Milwaukee, Wis., (Miller, Mack & Fairchild, of Milwaukee, Wis., of counsel), for appellant.
Frank T. Boesel, of Milwaukee, Wis., for appellee.
Before SPARKS and MAJOR, Circuit Judges, and BRIGGLE, District Judge.
PER CURIAM.
By reference we adopt the opinion of the District Court as that of this court. See 64 F.Supp. 961.
Judgment affirmed.

Question: What federal agency's decision was reviewed by the court of appeals?

Choices:
Benefits Review Board
Civil Aeronautics Board
Civil Service Commission
Federal Communications Commission
Federal Energy Regulatory Commission
Federal Power Commission
Federal Maritime Commission
Federal Trade Commission
Interstate Commerce Commission
National Labor Relations Board
Atomic Energy Commission
Nuclear Regulatory Commission
Securities & Exchange Commission
Other federal agency
Not ascertained or not applicable

Answer: 14