Which BEST describes the significance of the Supremacy Clause? O The Supremacy Clause establishes that only state courts can declare state laws to be unconstitutional. O The Supremacy Clause gives the state courts the power to strike down federal laws. O The Supremacy Clause enforces the idea of national unity by establishing the superiority of federal law over state law. O The Supremacy Clause gives the states governments the power to pass laws that contradict federal law