According to the passage, which of the following is true about the painting of property as it is described in the passage? A. It was typified in the work of George Stubbs. B. It was usually commissioned by persons who had great political power. C. It was regarded in the eighteenth century as a mark of good taste. D. It was at its most popular in eighteenth-century Britain. E. It was advocated primarily by those who owned a great deal of property.