Identify a True Statement About the U

Identify a true statement about the U.S. district courts.

A) The U.S. district courts are on the highest tier of the federal court system.
B) Cases involving federal laws end in the U.S. district courts after the final decision has been made by a judge or jury.
C) At the present time, there are less than fifty judicial districts in the United States.
D) The number of judicial districts varies over time, primarily owing to population changes and corresponding caseloads.