Which of the following is incorrect?
A . All courts below the Supreme Court may refer a case involving European Law to the European Court of Justice for a preliminary ruling.
B . Supreme Court must refer a case involving European Law to the European Court of Justice for a preliminary ruling.
C . An English court is not bound to give effect to a preliminary ruling of the European Court of Justice.
D . A preliminary ruling of the European Court of Justice is sent back to the Court which referred the question and must be given effect by that court.
Answer: C