Which of the following is true about the 2007-2008 food price spikes? Group of answer choices Because the price increases only affected grains like corn and wheat, it didn't have that much of an impact on food security. Increases in oil prices, demand for biofuels, and decreasing stocks of food commodities contributed to drive food prices up substantially The primary source of blame for increasing food prices is population growth The higher prices reflected the natural economic flows of supply and demand