What Does It Mean to Say That Americans Spoke a "Common

What does it mean to say that Americans spoke a "common language of consumption" by the late nineteenth century?

A) People found that the only way they could become truly American was to buy goods made in America.
B) Americans found a commonality in a consumer culture, in which they all could buy the same kinds of goods.
C) Americans no longer wanted to produce goods for other countries or themselves and wanted only to buy imports.
D) Because of the new types of work in the United States, most Americans were becoming very wealthy and could afford consumer goods.
E) Only native-born Americans bought the new consumer goods, which broadened the gap between immigrants and nonimmigrants in the United States.