I have a question about "A Christmas Carol" by Charles Dickens. On one hand this story seems to clearly be a fantasy story, what with the ghosts and time travel and all. But on the other hand we do not have a `literature` tag and I do not recall having seen past questions dealing with classic literature. 

My question is mainly about "A Christmas Carol" but I am also interested in the general policy toward other books of classic literature (e.g., Frankenstein, A Picture of Dorian Gray, Metamorphosis, etc...)?