Which of the following statements is NOT true of a folk culture

A．The study is based on a small sampling.
B．Some students participated in the study.
C．The result of the study is somewhat surprising.
D．The study is probably well funded.

A．compare the behavior of urban and suburban kids in terms of some social problems
B．highlight the gravity of some social problems involving kids
C．show the author's well-informedness
D．draw attention to the seriousness of problems with suburban kids