In 1973, OPEC helped bring on a devastating energy crisis and economic recession by: a. dramatically raising the price of oil, thereby exposing the lack of available supply in the U.S. b. banning the sale of oil to Israel's allies, which included the United States c. dramatically lowering the price of oil to undercut U.S. oil sales d. attacking Israel on Yom Kippur, the Jewish Holy Day, thereby paralyzing the regional economy