Which retail-related Guinness World Record was actually set in 2019?

The retail industry has seen some incredible world records over the years, from the largest shopping malls to the most expensive marketing campaigns. Test your knowledge about extraordinary retail achievements that have made it into the record books! Can you identify which famous retail world record is authentic?

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Amazon's 2019 Prime Day broke the record for the most online sales in a 48-hour period, generating over $11.5 billion worldwide
The Mall of America attracted the record for most customer visits in a single day, with over 2.1 million shoppers on Black Friday 2019
Nike set the record for most customer feedback collected in 24 hours with 3.7 million responses during their 'Voice of the Athlete' campaign
Alibaba's Singles' Day 2019 commercial was watched by a record 1.8 billion people globally, the most-viewed advertisement in history