Which statement from the passage contains a fact that should include a citation? a) corn prices have more than doubled since 2005 because of increased demand, according to financial experts. b) shoppers are certain to see the prices of beef, chicken, and pork increase if corn prices continue to skyrocket. c) many are seeking out new ways to decrease pollution levels and to find cleaner energy sources to power their homes and businesses. d) instead of focusing on a technology that is too costly to be practical, we should be encouraging our government to continue investing in other alternatives.