One of Mitch Duneier's Main Conclusions in His Ethnography of Street

One of Mitch Duneier's main conclusions in his ethnography of street vendors in New York City was that, despite the chaos and disorder they seem to bring to the street, the opportunity to sell something actually gave vendors a sense of purpose and dignity. Disputing aspects of New York's crackdown on petty and nonviolent crimes, Duneier argues that politicians have failed to distinguish between physical signs of decline, like graffiti, and street vendors who are working to improve their lives. Which of the following advantages of ethnography does Duneier's research demonstrate?

A) The detailed nature of ethnographies can help to reshape the stereotypes that we hold about others and that are often the basis for social policy.
B) Ethnographies offer a means of studying groups that are often overlooked with other methods.
C) Ethnographies allow respondents to speak in their own words.
D) Ethnographies are not always representative.
E) Ethnographic research can be used to gather data on a population that is too large to study by other means.