Answer:
C. federal district court
Step-by-step explanation:
In constitutional terms, the people of the United States owe loyalty to at least two sovereigns, first: in the United States, and the other is their state. And hence, they can theoretically commit treason either against one or both of them. Treason refers to a criminal matter under federal and state law. It is a federal offense, so it would have been heard in a federal courtroom, although the first would be in the district where the offense had been committed.