What is the most likely reason the poet repeats the word "perched,” and how does this repetition contribute to the mood?

The poet repeats the word “perched” to show that the raven is sitting quietly, and this contributes to the mood of sorrow in the poem.

The poet repeats the word “perched” to show that the raven is threatening to the speaker, and this contributes to the mood of powerlessness in the poem.

The poet repeats the word “perched” to show that the raven is sitting in the room, and this contributes to the mood of calm in the poem.

The poet repeats the word “perched” to show that the raven is strange, and this contributes to the mood of surprise in the poem.