Which of the following has been cited as a result of the diffusion of popular culture into the institutions of folk culture?
选项：

A: Popular culture has challenged the subservience of women to men in many traditional cultures.
B: Popular culture has resulted in the widespread migration of people who adhere to folk culture and traditional institutions.
C: Popular culture has led to an increase in nutritional standards in traditional societies, which adhere to folk culture.
D: Popular culture has led to a reduction in literacy rates in traditional folk cultures.
E: Popular culture usually results in an erosion of democratic values and the imposition of a dictatorship in folk cultures.