Which fast food chain's advertising campaign successfully rebranded chicken parts that were previously considered undesirable, turning them into one of the most popular menu items worldwide?

In the competitive world of food marketing, some campaigns become legendary. This trivia tests your knowledge about one of the most successful product advertising campaigns in fast food history that completely transformed a menu item's popularity and perception. Think you know your food advertising history? Test your knowledge with this challenging question!

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McDonald's with Chicken McNuggets (originally created to utilize excess chicken meat)
KFC with the Original Recipe Bucket (initially developed to sell less popular chicken pieces)
Burger King with Chicken Fries (designed to compete with French fries using chicken trimmings)
Wendy's with Spicy Chicken Nuggets (created to utilize dark meat that wasn't selling well)