Which statement is correct? O IPO underpricing is limited to the U.S. markets, The only period in the U.S. when underpricing produced first day returns of 50 percent or more was during the tech bubble of 1999-2000, O IPO underpricing is minimal in China, The percentage of underpricing remains stable over time in the U.S. Some of the greatest IPO underpricing has occurred in Saudi Arabia