"Our friendship lasted, in this manner, for several years, during which my general temperament and character . . . had (I blush to confess it) experienced a radical alteration for the worse."

How does this example of foreshadowing build suspense in the story?
A. It creates tension by contrasting the cat's stable nature with the narrator's own unsteady character.
((B.)) It implies that the end of the friendship was related to a change in the narrator's character.
C. It shows that the story takes place over an extended period of time, during which the main character changes.
D. It reveals that the narrator is aware of his own failings.

THE ANSWER IS B. It implies that the end of the friendship was related to a change in the narrator's character.