Wall St. down on China, Greek worry; energy gains

U.S. stocks pared their losses on Monday as investors took increased tensions over Greek debt negotiations and disappointing Chinese economic data in stride, helped by a rise in oil prices that boosted energy stocks. After Greece's Prime Minister Alexis Tsipras ruled out any extension of its international bailout on Sunday and announced moves to reverse some of the reforms imposed by its lenders European Commission President Jean-Claude Juncker said Greeks should not expect the euro zone to