Substantive due process differs from procedural due process for which of the following reasons?

Substantive due process is founded on the $6^{th}$ Amendment, whereas procedural due process is founded on the $5^{th}$ Amendment Substantive due process applies to commercial speech, whereas procedural due process applies to corporate political speech Substantive due process refers to fairness, whereas procedural due process refers to the propriety of warrantless searches Substantive due process looks at the basic fairness of a law's content, whereas procedural due process looks at the basic fairness of a law's enforcement process