Which company's controversial 2019 logo redesign, costing approximately $1M to develop, reportedly led to a $4 billion increase in brand value within a year despite initial public backlash?

In the world of pop culture, corporate logos can become cultural icons themselves. When major brands undergo rebranding, it can cause everything from public outrage to increased sales. This poll tests your knowledge about one of the most controversial and financially significant logo redesigns in recent pop culture history, which sparked heated debates across social media platforms and significantly impacted the company's market perception.

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Slack (from the colorful hashtag to the geometric pinwheel)
Burberry (from the knight emblem to the minimalist wordmark)
Warner Bros. (to the simplified blue and white shield design)
Mastercard (removing the name and keeping only the overlapping circles)