Joe Hartsfield and Roger McRoy have a complicated legal dispute over the location of the property line between their farms. Their case is being decided by the U.S. Supreme Court. Where was their case heard just before entering the U.S. Supreme Court?

It was heard in a federal court of appeals, represented by section B on the diagram.
It was heard in a federal district court, represented by section D on the diagram.
It was heard in a state court of appeals, represented by section E on the diagram.
It was heard in a state court of last resort, represented by section C on the diagram.