How do representational, abstract, and nonrepresentational artworks differ? a. abstract artworks have lines, shapes, and colors that match real objects, while representational and nonrepresentational artworks do not. b. nonrepresentational artworks show real objects, while representational and abstract artworks do not show real objects. c. representational and abstract artworks show real objects in realistic or imaginative ways, while nonrepresentational artworks do not show real objects. d. representational and nonrepresentational artworks use realistic lines, shapes, textures, and colors to depict objects, while abstract artworks do not.