Other than the U.S. Supreme court,all federal courts where establish by Congress.
Answer: Option B
Step-by-step explanation:
In the United States, article III of the constitution in the United States say that there has to be an establishment of the supreme court which is the most important court to deal with important conflicts happening in the country and is the last resort of the court which means that the decision taken by this court is final.
But other than this, there are federal courts to deal with issues which are not very important to go to the supreme court also and these can be established by the congress also.