GRE Reading Comprehension: ETS-GRE阅读ETS - 212U2052BQ32216F7

Which one of the following can most reasonably be inferred from the passage about the study that Porter left unfinished at his death? A. If completed, it would have contradicted some of the conclusions contained in his earlier book. B. If completed, it would have amended some of the conclusions contained in his earlier book. C. If completed, it would have brought up to date the comprehensive history of African-American art begun in his earlier book. D. If completed, it would have expanded upon the project of his earlier book by broadening the scope of inquiry found in the earlier book. E. If completed, it would have supported some of the theories put forth by Porter's contemporaries since the publication of his earlier book.