According to Marx, the End of Worker Exploitation Would Occur

According to Marx, the end of worker exploitation would occur when

A) scientific socialism was proven by the intellectuals.
B) war broke down barriers of nationalism and included colonist countries.
C) free democracy replaced all entrenched monarchies in Europe.
D) workers rose up and established a government of their own.
E) war broke out and the Western industrialized Christian world conquered the East.