Which statement best compares how "Heading West" and "A Day on the Trail" convey the westward expansion of the United States? A. "Heading West" explains that the first pioneers are willing to take risks, while "A Day on the Trail" illustrates the negative effects of their risk-taking. B. "Heading West" examines the overall pattern of westward growth in the United States, while "A Day on the Trail" conveys a more personal scene from a typical day in the lives of a pioneer family. C. "Heading West" describes various hardships that led the first pioneers to give up before reaching the West, while "A Day on the Trail" conveys a more pleasant account of the caravans. D. "Heading West" discusses the dangerous experiences of pioneers traveling during the winter, while "A Day on the Trail" shows how such expeditions improve after travelers learn to avoid extreme conditions.