Reuters is reporting that Apple has responded to the Justice Department's accusations that the company colluded with publishers to increase e-book pricing, saying that it negotiated with the publishers separately and reached different agreements with each.But Apple said the publishers had decided, independent of Apple, to eliminate discounts on wholesale book prices of e-books, to sell lucrative hardcover books first to bookstores in a practice called windowing and to take other measures to push Amazon to raise prices.In a court filing dated April 2
