It can be inferred from the passage that the author would agree with which one of the following statements regarding changes in painting since the nineteenth century? A. The artistic experiments of the nineteenth century led painters to use a variety of methods in creating portraits, which they then applied to other subject matter. B. The nineteenth-century knowledge of light and movement provided by photography inspired the abstract works characteristic of modern art. C. Once painters no longer felt that they had to paint conventional portraits, they turned exclusively to abstract portraiture. D. Once painters were less limited to the impressionist style, they were able to experiment with a variety of styles of abstract art. E. Once painters painted fewer conventional portraits, they had greater opportunity to move beyond the literal depiction of objects.