Task: songer_origin

What follows is an opinion from a United States Court of Appeals. Your task is to identify the type of court which made the original decision. Code cases removed from a state court as originating in federal district court. For "State court", include habeas corpus petitions after conviction in state court and petitions from courts of territories other than the U.S. District Courts. For "Special DC court", include courts other than the US District Court for DC. For "Other", include courts such as the Tax Court and a court martial.

SCHNACKENBERG, Circuit Judge.
By his amended complaint filed in the' district court, plaintiff sought cancellation of releases executed by him in favor of defendant Gilpin and a confirmation of plaintiff’s claimed interest in a certain oil lease. Defendants having filed answers, the case was tried by the district court without a jury and it was stipulated that the releases might be set aside and that the sole issue became the nature and extent, if any, of plaintiff’s interest in certain oil production in a tract of" land in White county, Illinois.
The district court made findings of fact and conclusions of law and entered a judgment in favor of defendants, from, which this appeal was taken by plaintiff.
An opinion was filed by the district court, 150 F.Supp. 471. In that opinion, the lower court has adequately and correctly marshaled the pertinent facts and applied to them the correct principles of law. It has reached a right result. We' see no reason to encumber the shelves of the law libraries with an expression of our views. We are content to adopt the opinion of the district court, which we~ now do.
For that reason, the judgment from, which the appeal was taken is affirmed-
Affirmed.

Question: What type of court made the original decision?
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. Special DC court
H. Other 
I. Not ascertained
Answer:

Answer: A