Why does the raven have such a negative effect on the speaker in "the raven"?

a.
the raven creates a racket when the speaker is trying to read.

b.
the raven's speech reminds the speaker of his own loneliness.

c.
the raven laughs at the speaker's pain over losing lenore.

d.
the raven talks constantly of lenore.

The answer is letter B because the raven was always repeating Nevermore in the poem. There was once the speaker asked if he could ever meet Lenore (his beloved who died) again but the raven said Nevermore. The speaker became furious to the raven because the raven symbolizes the grief and loneliness of the speaker.

Callused, scorching, prowls