Which of the Following Statements About Britain's National Parties (The

Which of the following statements about Britain's national parties (the Scottish National Party and the Plaid Cymru) is CORRECT?

A) These national parties dominate the contests in their regions.
B) The biggest competitor for these national parties in their respective regions is the Labour Party.
C) These parties have seen their support erode in favor of the British Green Party.
D) These parties have started to competitively participate in electoral districts outside of their respective regions.
E) The biggest competitor to these parties in their respective regions is the Conservative Party.