Carly Fiorina is ready to take on Donald Trump, the front runner for the Republican nomination. "I think Mr. Trump's going to be hearing quite a lot from me," said Fiorina in an interview with CNBC ahead of the second Republican debate. "Donald Trump and I are in totally different businesses," said Fiorina. "He's in the entertainment business. And he's also in a privately held business. In the business I was in, we had to report our results publicly, as you well know, in excruciating detail, quarter after quarter after quarter." She added, "If you file for bankruptcy four times,...