I believe that it is A for your question.
Answer:
The ultimate outcome of class struggle envisioned by Charles Marx and Friedrich Engels was the triumph of the proletariat over the bourgoisie, the exploiting class of capitalism.
Explanation:
Human history is the history of class truggle, according to Marxism. Marx and Engels stated that the bourgoisie, the ruling capitalist class, exploits the workers. The class of the workers is the proletariat. They predicted the ultimate triumph of the proletariat, the advent of socialism and communism. In the last phase of social evolution, in a communist society, classes would definitely dissappear.
The finishing point constructed by Twain is: when the old man is about to finish the story of Jim Smiley's jumping frog, another individual interrupts him. The narrator tries to leave the place, but the old man reaches it. The story ends with the old man who starts telling the narrator about a yellow cow with only one eye of Jim Smiley.