I believe your answer would be A? If you have any excerpts from stories you've been reading, feel free to share some with me so i can know for sure. :)
Well, the poem evolves around settings such as twilight, dusk, fire, plants, and birds. I would personally say the meaning behind it could vary between physically dark occurrences that aren't viewed as a true form! ( if ya get what I'm sayin)
You should first read and understand what you are trying to accomplish with the writing. Making an outline doesn't hurt either.<span />