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.

OPINION OF THE COURT
PER CURIAM.
This appellant is a state prisoner serving a term of 15 to 25 years in prison pursuant to a conviction of murder on his plea of nolo contendere. He now seeks relief by federal habeas corpus.
The district court analyzed each of the prisoner’s contentions and denied habeas corpus in a carefully reasoned, very detailed and sound opinion with which we agree.
The judgment will be 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