To describe trying to hold sand, Edgar Allan Poe uses these pair of rhyming words:
And I hold within my hand
Grains of the golden sand-
How few! Yet how they creep
Through my fingers to the deep.
The author is describing his lost of hope "In a night, or in a day / In a vision, or in none". He is talking about a goodbye, a sad moment where he feels the loss of his illusion, like grains of sand falling from his hands, falling deep while he weeps, he cries of sadness for the goodbye.
The answer your looking for would be B.
I hope this helps.