For several days ensuing, her name was unmentioned by either Usher or myself: and during this period I was busied in earnest endeavors to alleviate the melancholy of my friend. What does this excerpt reveal about the narrator of the story?
a. It describes what the narrator knows from his past.
b. It describes what the narrator experiences in the story.
c. It provides an inference drawn by the narrator.
d. It provides a criticism voiced by the narrator.