Which of the Following Is True of the Supremacy Clause

Which of the following is true of the supremacy clause that appears in Article VI, Clause 2, of the U.S. Constitution?

A) It establishes Congress as the supreme branch of the national government.
B) It ensures that the states retain ultimate governmental power.
C) It gives sovereign powers to local governments who function at their own discretion.
D) It outlines the powers of the Supreme Court as the ultimate arbitrator of the Constitution.
E) It makes the Constitution and federal laws superior to all conflicting state and local laws.