Which company holds the Guinness World Record for the most expensive advertising campaign ever, spending an estimated $2.6 billion between 2006 and 2009?

World records aren't just about physical feats—they extend to the business world too! In the realm of advertising, companies have spent astronomical sums to promote their products and services. This trivia question focuses on the most expensive advertising campaign ever recorded, showcasing how far brands will go to capture consumer attention. Test your knowledge about this remarkable marketing milestone that set a world record for advertising expenditure.

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Microsoft (for Windows Vista launch)
Coca-Cola (for the 'Open Happiness' campaign)
Apple (for the original iPhone introduction)
Procter & Gamble (for the Beijing Olympics sponsorship)