Which one of the following best expresses the main idea of the passage? A. Implicit in the terminology of the school of criticism known as deconstruction are meanings that reveal the true nature of the deconstructionist's endeavor. B. The appearance of the terms signifier and signified in the field of literary theory anticipated the appearance of an even more radical idea known as deconstruction. C. Innovations in language and relations between old and new meanings of terms are a special concern of the new school of criticism known as deconstruction. D. Deconstructionists maintain that it is insufficient merely to judge a work: the critic must actively dismantle it. E. Progress in the field of literary theory is best achieved by looking for new terms like signifier and deconstruction that might suggest new critical approaches to a work.