How does the overall use of repetition in the poem contribute to its mood?A. The poem's repetitive and rigid structure contrasts the speaker's declining mental state, thus contributing to the crazed mood of the poem.B. The poem's repetition of the negative response "Nevermore" contributes to the lethargic and dispassionate mood of the poem.C. The poem's use of repetition and alliteration creates a dreamy mood, as the author thinks of his love, Lenore.D. The poem's use of repetition — namely the tapping, the narrator's calls for Lenore, and the raven's catchphrase of "Nevermore" — contributes to the overall suspenseful, eerie mood.