Before the Bell: Sovereign debt, Apple, Krispy Kreme in focus

China showed slowing growth in manufacturing. Apple Inc. (NASDAQ:AAPL) Krispy Kreme Doughnuts Inc. (NYSE:KKD) Processed-food company Campbell Soup Co. (NYSE:CPB) HSBC���s preliminary purchasing managers index for China fell to a 10-month low of 51.1 in...