An Overall Result of the Crimean War Was

An overall result of the Crimean War was

A) the reinforcement of the Concert of Europe until World War I.
B) continued Russian expansionism in Europe for the next two decades.
C) increased involvement for Great Britain in continental affairs.
D) the destruction of the Concert of Europe and the creation of opportunities for Italian and German national unification.
E) to lead to the breakup of the Holy Alliance.