Answer: D
Explanation: Edgar Allan Poe is considered a Gothic writer because his works deal with dark subjects like madness and death. Gothic literature typically features elements such as supernatural or eerie settings, grotesque characters, and a general mood of terror and suspense. Poe's works often explore these themes, with stories such as "The Fall of the House of Usher," "The Tell-Tale Heart," and "The Cask of Amontillado" all featuring elements of horror and the macabre. Poe's writing style, which often emphasizes a sense of foreboding and suspense, is also typical of Gothic literature. Therefore, the correct answer is (D) His works deal with dark subjects like madness and death.