"Footnote 4" of United States V

"Footnote 4" of United States v. Carolene Products Co. identifies areas where

A) Congress has complete authority and is not subject to checks by the executive or judicial branches.
B) economic regulation encroaches on personal liberties.
C) the Court should not apply the tests of ripeness or mootness.
D) the Court should not presume the constitutionality of legislation.
E) the federal government has authority over state governments.