Which of the Following Are the Three Levels of Federal

Which of the following are the three levels of federal courts in the United States?

A) Appellate courts, the U.S. Supreme Court, and state supreme courts
B) State municipal courts, U.S. district courts, and the U.S. Supreme Court
C) U.S. district courts, intermediate U.S. courts of appeal, and the U.S. Supreme Court
D) Municipal courts, intermediate U.S. courts of appeal, and the U.S Supreme Court
E) Municipal courts, state courts, and the U.S. Supreme Court