Which ancient civilization first introduced the concept of a 'customer satisfaction guarantee' with their retail products around 2000 BCE?

The ancient world was home to sophisticated retail environments that pioneered customer experience concepts we still use today. From the agoras of Greece to the forums of Rome and bazaars of Mesopotamia, ancient civilizations developed remarkable retail innovations. This poll tests your knowledge about how these early societies approached the retail customer experience and created shopping environments that would influence commerce for millennia to come.

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Babylonians, who carved warranty promises on clay tablets for goods sold in their marketplaces
Ancient Egyptians, who included papyrus return policies with luxury items sold to nobility
Minoans of Crete, who marked their exported pottery with satisfaction symbols guaranteeing quality
Indus Valley merchants, who issued metal tokens that could be exchanged if products proved defective