Which passage from the article best supports the idea that Gennaro Lombardi was not the first person to sell pizza in the U.S? A.Italian immigrants whose names have been forgotten probably also played a part. B.For many years, Gennaro Lombardi was considered to be America's first pizzeria proprietor. C.[Regas] found pizzeria advertisements indicating that New Yorkers could buy a pie years before Lombardi ever set foot in the city. D.[Lombardi's] namesake restaurant is still in business more than a century after opening its doors, and it's irrefutably a big cheese in pizza history.

C.[Regas] found pizzeria advertisements indicating that New Yorkers could buy a pie years before Lombardi ever set foot in the city.