Which of the following best describes the central issue with which the passage is concerned? A. The perfunctoriness of much of the critical work devoted to DuBois' novels B. The nature of DuBois' engagement with the issue of race in The Quest of the Silver Fleece C. Whether DuBois' novels are of high quality and relevant to current concerns D. The relationship between DuBois the novelist and DuBois the philosopher, historian, and editor E. The degree of consideration that has been given to DuBois' novels, including The Quest of the Silver Fleece