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Tim Cook, chief executive officer of Apple Inc., speaks during an Apple product announcement in San Francisco, California, U.S., on Wednesday, Sept. 9, 2015. Apple Inc. introduced a larger iPad with a 12.9-inch screen, designed to attract business users and jump-start demand for its tablets. Photographer: David Paul Morris/Bloomberg via Getty Images

Tim Cook, chief executive officer of Apple Inc., speaks during an Apple product announcement in San Francisco, California, U.S., on Wednesday, Sept. 9, 2015. Apple Inc. introduced a larger iPad with a 12.9-inch screen, designed to attract business users and jump-start demand for its tablets. Photographer: David Paul Morris/Bloomberg via Getty Images