Which brand holds the Guinness World Record for the 'Most people unwrapping candy simultaneously' as part of a marketing campaign?

Test your knowledge about extraordinary retail achievements that have made it into the Guinness World Records! Throughout history, brands have pushed boundaries with innovative marketing strategies and consumer engagement tactics that earned them a place in the record books. Can you identify which brand or retailer achieved the specific world record mentioned in this question?

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Cadbury (3,308 people unwrapping chocolate bars in 2012)
Hershey's (6,904 people unwrapping chocolate kisses in 2015)
M&M's (4,436 people unwrapping candies in 2013)
Ferrero Rocher (5,221 people unwrapping gold-wrapped chocolates in 2014)