How did Alexander Graham Bell's telephone revolutionize both communications andbusiness in America?A) He had an instant monopoly on the communications market when he combinedtelephone and telegraph services in AT&T.B) He installed telephones in every office building in New York to facilitatecommunications between business and the stock exchange.C) He used a complicated organizational structure in his new company that allowed bothlocal and cross-country communication.D) He sold the rights to his invention to John D. Rockefeller, who put it into nationaluse.

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