Which Statement About Robert and Helen Lynd's Study Is Correct

Which statement about Robert and Helen Lynd's study is correct?

A) They observed the city from afar but did not live there.
B) They concluded that an elite was running things.
C) They concluded that most community decisions were arrived at democratically.
D) The study was limited to governmental matters.
E) They determined that U.S.cities were completely dysfunctional.