If British Petroleum builds a new plant in Louisiana, _______. a. in the future, U.S. GDP will rise more than U.S. GNP b. in the future, U.S. GDP will rise less than U.S. GNP c. in the future, U.S. GDP and GNP will both fall because some income from this investment will accrue to foreigners d. there has been an increase in foreign portfolio investment in the United States e. none of the answer choices are correct