Oil slumps on supply worry, sterling hurt by May comments

Oil prices fell on Monday on signs growing U.S. output could undermine plans by other producers to cut supply, while sterling slumped following comments by British Prime Minister Theresa May alluding to an aggressive exit from the European Union. Meanwhile, the drop in oil prices weighed on energy stocks on Wall Street as the Dow Jones Industrial Average moved further from hitting the historic and widely awaited 20,000 mark. "We see the optimism surrounding OPEC and non-OPEC production cuts bein