What events from "the black cat" seem to prove the wife's superstition about cats to be correct? a. the impression of a cat with a rope around its neck appears on a wall of the burned-out house. b. the wife brings home new animals for the narrator because she knows he is an animal lover. c. the narrator calmly decides to hide the body of his wife inside the wall of the cellar. d. the narrator starts drinking heavily and becomes abusive, scaring both his wife and his pet.