Which company's slogan holds the Guinness World Record for being the longest continuously used slogan in advertising history?

Brand slogans can make or break a product's success in the marketplace. Some have become so iconic that they've set world records for their longevity, impact, or recognition. Test your knowledge about these remarkable taglines that have made history in the world of advertising and brand identity. Do you know which slogan holds the distinction of being the longest-running in advertising history?

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De Beers - 'A Diamond is Forever' (since 1948)
Coca-Cola - 'The Pause That Refreshes' (since 1929)
Maxwell House - 'Good to the Last Drop' (since 1915)
Avis - 'We Try Harder' (since 1962)