I would say A.) the assertion and the reason are both correct, and the reason is valid.
C. The frightened deer bounded through the forest.
C. Germany's attack on Russia was similar to betraying all the rules of civilization.
Russia's intention was clearly aimed at making peace with Germany, otherwise they would not have signed the peace treaty. The fact that Germany then turned around and broke that treaty because of how horrible their leaders were, shows that they were not following established rules of civilization.
