Which of the following best expresses the main idea of the passage? A. In order to understand Twain's novel, critics must compare its protagonist to Oedipus. B. Twain's novel contains some chapters that resist easy inclusion into a unified interpretation. C. The unconventional structure of Huckleberry Finn indicates a lack of authorial awareness. D. Twain's novel was the first major American novel to discard traditional European structures. E. The protagonist of Huckleberry Finn is considered a modern day Oedipus by critics.