Which product was the first to be scanned with a barcode in a retail transaction?

The barcode system revolutionized retail inventory and checkout processes worldwide. This seemingly simple pattern of lines has transformed how products are tracked, sold, and analyzed in the retail industry. Test your knowledge about this groundbreaking retail innovation that paved the way for modern retail analytics and big data applications.

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A pack of Wrigley's chewing gum
A carton of milk
A loaf of Wonder Bread
A can of Coca-Cola