Parental responsibility in a cross-border context

Question   The preliminary reference procedure allows Member State courts to (select correct answer):

a Refer family law cases raising questions of EU law to the European Court of Justice for a decision

b Refer a question of interpretation of European family law to the European Court of Justice for a definitive
         interpretation of the meaning of EU law.

c Invite the European Court of Justice to decide an appeal in family law cases arising in the national court