If you are referring to the story 'The End of Something,' then I believe the correct answer is A. based on his own experiences.
This is because the story is sort of autobiographical. The plot is about a guy, Nick, who breaks up with his girlfriend, Marjorie, because their relationship is no longer fun. As it turns out, Hemingway himself dated a girl named Marjorie when he was 17, but he dumped her for someone else.
