Which retail brand is credited with pioneering the linguistic shift from 'cup sizes' to letter-based sizing (S, M, L) for beverages, now standard vocabulary in coffee shops worldwide?

The language of retail has evolved dramatically over the decades, with certain brands pioneering linguistic innovations that transformed how we talk about products. Effective brand positioning often relies on creating distinctive linguistic associations that stick in consumers' minds. This poll tests your knowledge about a historic linguistic innovation in retail branding that changed consumer behavior and vocabulary worldwide.

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Starbucks
Dunkin' Donuts
McDonald's
Peet's Coffee