The Supreme Court of Illinois is considering a case involving only Illinois parties and events that took place in illinois. In this case, that court is convinced that a federal regulation requires something (call it Y) that a provision of the illinois constitution prohibits.

1. The court would prohibit Y because of the Supremacy Clause.

2. The court would require Y because of the Supremacy Clause

3. The court would prohibit Y because all parties are from Illinois and all events occur in Illinois, no other state jurisdictions are implicated.

4. The court would prohibit Y because, if a regulatory provision cannot be reconciled with a constitutional provision, then the constitutional provision trumps the regulatory provision

5.None of the above