Which retail product holds the Guinness World Record for the fastest-selling consumer electronics item in history?

The world of retail is filled with innovation, and some products and stores have achieved incredible world records. Test your knowledge about the most extraordinary achievements in retail and product history. Do you know which retail innovations have broken world records and changed the industry forever?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Apple iPhone 6/6 Plus (10 million units in first weekend, 2014)
Sony PlayStation 4 (8.4 million units in first month, 2013)
Samsung Galaxy S4 (6 million units in first two weeks, 2013)
Microsoft Xbox One (5 million units in first three weeks, 2013)