Which retailer holds the Guinness World Record for the largest single-day online sales event?

The retail industry has seen some incredible world records set throughout history - from massive stores to extraordinary sales achievements. Test your knowledge about these remarkable retail accomplishments that have earned their place in the Guinness World Records. Can you identify which of these impressive retail achievements actually made history?

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Amazon Prime Day (2019) with $7.16 billion in sales
Alibaba's Singles Day (2020) with $74.1 billion in sales
Walmart's Black Friday (2018) with $15.3 billion in sales
JD.com's 618 Festival (2021) with $39.2 billion in sales