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:
NATIONAL LABOR RELATIONS BOARD, Petitioner, v. MIDWAY CLOVER FARM MARKET, INC., Respondent.
No. 20330.
United States Court of Appeals, Sixth Circuit.
Dec. 8, 1970.
Arthur L. Fox, II, N. L. R. B., Washington, D. C., Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, John D. Burgoyne, Attys, N. L. R. B., Washington, D. C., on the brief, for petitioner.
Robert D. Randolph, Pittsburgh, Pa., for respondent.
Before PHILLIPS, Chief Judge, McCREE, Circuit Judge, and. O’SULLIVAN, Senior Circuit Judge.
ORDER
This case is before the court upon the application of the National Labor Relations Board to enforce its order reported at 175 N.L.R.B. No. 151. Reference is made to the decision and order of the Board for a recitation of the facts.
This court holds that the part of the order requiring reinstatement of Stewart Prindle with backpay is not supported by substantial evidence on the record when considered as a whole, for the reasons stated in the opinion of the trial examiner and the dissenting opinion of Chairman McCulloch.
It is ordered that enforcement is denied as to that part of the Board’s order requiring the reinstatement of Stewart Prindle with backpay. It is further ordered that in all other respects enforcement is granted.
Judge McCree would enforce the order of the Board in its entirety.

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: 9