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Which sentence is most important to include in a summary of this Article?
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A. Thomas Edison, the great inventor, helped come up with the first movie cameras.
B. Industrial America had important new machines, but it also had crowded cities and bad smells.
C. Nickelodeons helped people escape from their hard lives in Industrial America.
D. The name "Nickelodeon" came from nickel, for the price, and odeon, for the ancient Greek word for "theater."