Which of the Following Is True About the Supremacy Clause

Multiple Choice

Which of the following is true about the supremacy clause?

A) State laws that conflict are incorporated when the federal government enacts laws in an area.
B) If a federal law preempts a subject, a state law that attempts to regulate it is constitutional.
C) It states that courts must interpret state and federal laws to see if they are in conflict.
D) It is applied when the federal government is not acting in pursuit of its constitutionally authorized powers.
E) It does not apply to the federal government.