In paragraph 3, why does the author provide the information that 40 percent of American cattle are fattened in the High Plains? A. To suggest that crop cultivation is not the most important part of the economy of the High Plains B. To indicate that not all economic activity in the High Plains is dependent on irrigation C. To provide another example of how water from the Ogallala has transformed the economy of the High Plains D. To contrast cattle-fattening practices in the High Plains with those used in other region of the United States