Read the first stanza of the poem "The Raven" by Edgar Allan Poe. Once upon a midnight dreary, while I pondered, weak and weary,
Over many a quaint and curious volume of forgotten lore—
While I nodded, nearly napping, suddenly there came a tapping,
As of some one gently rapping, rapping at my chamber door.
“‘Tis some visitor,” I muttered, “tapping at my chamber door—
Only this and nothing more.”

Which line from the stanza best supports the idea that the speaker wasn't expecting anyone to come by?

"Over many a quaint and curious volume of forgotten lore—"

"While I nodded, nearly napping, suddenly there came a tapping,"

"As of some one gently rapping, rapping at my chamber door"

"'Tis some visitor,' I muttered, 'tapping at my chamber door—'"