Researchers Have Offered Three Explanations for the Rural-Urban Difference in Helping

Researchers have offered three explanations for the rural-urban difference in helping rates.Which of the following is NOT one of those three explanations?

A) People who choose to live in cities are less empathic than people who live in rural areas.
B) People who live in cities experience stimulus overload and are less likely to notice others to may need help.
C) Urban areas are more diverse, and we are less likely to help people who are different from ourselves.
D) There are more people around in urban compared with rural areas, so there is more risk of diffusion of responsibility occurring.