Which of these popular consumer products was originally developed as part of K-rations for American soldiers during WWII but later became a massive commercial success?

Many everyday products we use originated from military research or were initially developed for armed forces before becoming commercial successes. This fascinating area of military-to-civilian product development has shaped consumer markets in unexpected ways. Test your knowledge about these military innovations that transitioned to become household names and commercial successes. Do you know which products made the successful leap from battlefield to store shelf?

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M&M's chocolate candies
Coca-Cola in aluminum cans
Wrigley's Spearmint Gum
Kellogg's Corn Flakes