What Is One Way in Which Urban Areas in Developing

What is one way in which urban areas in developing nations differ from urban areas in highly developed nations?

A) urban areas in developing nations have more females than males than urban areas in highly developed nations.
B) urban areas in developing nations have a greater percentage people living in cities than urban areas in highly developed nations.
C) urban areas in developing nations have the worst air pollution in the world, including urban areas in highly developed nations.
D) urban areas in developing nations are growing at a slower rate than urban areas in highly developed nations.
E) urban areas in developing nations have fewer "top 10 largest cities" than urban areas in highly developed nations.