Mary Shelley ended her novel Frankenstein with this line:

He was soon borne away by the waves and lost in darkness and distance.

What technique did Shelley use to create a memorable concluding line?

A.
She described an action that tied up the loose ends in the story.
B.
She created a sensory image that leaves the reader with a meaningful final picture.
C.
She made a statement containing the main idea she wanted the reader to take away from the novel.
D.
She had one of the narrators offer a final reflection, conveying his feelings about the events of the novel.