Why Did Right-Wing Parties Have Less Influence in France and Britain

Why did right-wing parties have less influence in France and Britain than elsewhere in Europe?

A) The French and British governments were experienced at clamping down on opposition parties.
B) Socialist leaders were in power in both France and Britain after the war.
C) The economies of France and Britain were much stronger than those throughout the rest of Europe in 1918, so right-wing policies had little public appeal.
D) Parliamentary institutions were better established in France and Britain, and their upper classes were not plotting to restore authoritarian monarchies.