Which of the Following Statements About Brexit Is FALSE

Which of the following statements about Brexit is FALSE?

A) The nature of the potential future relationship between the EU and UK following a potential UK exit was not known at the time of the referendum.
B) Scotland and Northern Ireland voted differently than England and Wales on the referendum.
C) The governing Conservative Party tried to use the Brexit referendum to resolve an internal party disagreement.
D) European integration was viewed by the British public as most important problem facing the UK in the decade before the referendum.