Which of the Following Most Accurately Describes Classical Federalism

Which of the following most accurately describes classical federalism?

A) Between the 1800s and 1930s, provincial powers gradually decreased.
B) Between the 1800s and the 1930s, judicial decisions always favoured the federal government in constitutional disputes.
C) Both the federal and provincial governments enjoyed exclusive jurisdiction in certain policy fields.
D) Jurisdictional conflicts during this time were settled outside of the courts.