Task: songer_source

What follows is an opinion from a United States Court of Appeals. Your task is to identify the forum that heard this case immediately before the case came to the court of appeals.

PER CURIAM.
The above cause coming on to be heard on the transcript of record, the 'briefs of the parties, and the argument of counsel iti open court; and it appearing that there was no error in the ■ admission of evidence or any rulings thereon by the trial court;’ and that the conviction of appellant was sustained iby • the evidence;
And it appearing further that the District Court was not in error and did not-abuse its discretion in refusing to sentence appellant in accordance with the provisions of Title 18 U.S.C.A. § 5010, known as the Youth Offenders Act; and the court being duly advised;
Now, therefore, it is ordered, that the judgment of the District Court be and is hereby affirmed.

Question: What forum heard this case immediately before the case came to the court of appeals?
A. Federal district court (single judge)
B. 3 judge district court
C. State court
D. Bankruptcy court, referee in bankruptcy, special master
E. Federal magistrate
F. Federal administrative agency
G. Court of Customs & Patent Appeals
H. Court of Claims
I. Court of Military Appeals
J. Tax Court or Tax Board
K. Administrative law judge
L. U.S. Supreme Court (remand)
M. Special DC court (not the US District Court for DC)
N. Earlier appeals court panel
O. Other
P. Not ascertained
Answer:

Answer: A