Rejoice, New Year’s dieters: Oreos are getting a sugar-free option. Mondelez said Tuesday that Oreo Zero Sugar and Oreo Double Stuf Zero Sugar will go on sale in the U.S. in January. They’re a permanent addition to the company’s Oreo lineup. It’s the first time Mondelez has sold sugar-free Oreos in the U.S. They’re already sold in Europe and...