In what year and on what product was the first commercial barcode scanned in a retail store?

The introduction of barcode technology revolutionized retail history, transforming how products are tracked and sold. This seemingly simple pattern of black and white lines dramatically increased checkout efficiency and inventory management capabilities. But do you know when and where this retail innovation first made its commercial debut? Test your knowledge of this pivotal moment in retail history that changed shopping forever.

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1974, on a pack of Wrigley's chewing gum at Marsh Supermarket in Ohio
1969, on a Campbell's soup can at Kroger in Cincinnati
1981, on a Coca-Cola bottle at Walmart in Arkansas
1977, on a box of Kellogg's cereal at Safeway in California