Except in Matters Governed by the Federal Constitution or by Acts

Multiple Choice

Except in matters governed by the federal Constitution or by acts of Congress, the law to be applied in any case is the law of the state.Moreover, whether the law of the state shall be declared by its legislature in a statute or by its highest court in a decision is not a matter of federal concern.This rule to be applied by the federal court system is found in

A) the federal Constitution.
B) Swift v.Tyson.
C) Erie Railroad Company v.Tompkins.
D) the Uniform Commercial Code.