Task: songer_adminrev

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".

PER CURIAM.
This cause has been heard and considered on appeal by two convicts from the denial of a petition for writ of habeas corpus filed by them.
Having duly considered the briefs and oral arguments and the record in the cause, conclusion has been reached that the dismissal of the petition for writ of habeas corpus by the district court was correct, for the reasons stated by United States District Judge Thornton in his carefully prepared and detailed opinion.
The judgment of the district court is affirmed.

Question: What federal agency's decision was reviewed by the court of appeals?
A. Benefits Review Board
B. Civil Aeronautics Board
C. Civil Service Commission
D. Federal Communications Commission
E. Federal Energy Regulatory Commission
F. Federal Power Commission
G. Federal Maritime Commission
H. Federal Trade Commission
I. Interstate Commerce Commission
J. National Labor Relations Board
K. Atomic Energy Commission
L. Nuclear Regulatory Commission
M. Securities & Exchange Commission
N. Other federal agency
O. Not ascertained or not applicable
Answer:

Answer: O