Which of the Following Best Describes the Urban-Overload Hypothesis (Milgram,1970)

Which of the following best describes the urban-overload hypothesis (Milgram,1970) ?

A) People who visit cities from rural areas quickly become less empathetic, so avoid helping behaviours.
B) People who visit cities from rural areas feel isolated, so use helping as way to "reach out" to others.
C) People who live in cities often feel overwhelmed, so simplify things by keeping to themselves.
D) People who visit cities from rural areas feel overwhelmed, so avoid the urban dwellers.
E) People who live in cities feel out of touch with others, so use helping as a way to "reach out."