Which celebrity has held the longest continuous endorsement deal with a single brand?

In the world of celebrity endorsements, some partnerships stand the test of time while others fade quickly. Brand loyalty between celebrities and companies can create iconic marketing campaigns that define generations. This trivia tests your knowledge about one of the most enduring celebrity-brand relationships in marketing history. Do you know which famous face has maintained the longest continuous endorsement deal with a single brand?

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Michael Jordan with Nike (since 1984)
Betty White with Snickers (since 1954)
William Shatner with Priceline (since 1997)
Sam Elliott with the American Beef Council (since 1992)