A reader has made this inference: "I think Watson put the phosphorus on the dog when he touched it after it was dead." What is the best reason that this inference is not a "smart guess" — that is, why the reader cannot make this inference with confidence. A. The hound was already glowing with fire before it was killed. B. Holmes calls the phosphorus "a cunning preparation." C. The hound was too enormous for Watson to put it on that quickly. D. The passage says nothing about the phosphorus being on Watson's hand.