What is a difference between the Supremacy Clause and preemption? Question 1 options: a) Preemption depends on congressional intent, the Supremacy Clause does not. b) Preemption displaces federal laws; the Supremacy Clause applies to state laws. c) Preemption only applies if there is an express statement from Congress, the Supremacy Clause applies any time a state law conflicts with federal requirements. d) Preemption cannot be altered by congressional intent, the Supremacy Clause can