Congress passes a law prohibiting cigars made in Cuba from being sold in the United States. The Florida state legislature then passes a law allowing the sale of Cuban cigars in Florida. If the constitutionality of the Florida law is challenged in court, it will most likely be:

a$.$ struck down on the basis of the due process clause.

b$.$ struck down on the basis of the supremacy clause.

c$.$ upheld unless Congress expressly prohibits states from enacting laws regarding cigars.

d$.$ upheld on the basis of the supremacy clause.