Which statement best describes the population in the cities in the late 1800s?
 A :The population grew because of the movement of farmers into the cities and the arrival of immigrants to America.
 B: The population fell because farmers and immigrants moved west due to low factory wages and cheap land.
 C: The population grew dramatically because of the arrival of immigrants from Europe.
 D: The population grew because of the movement of farmers into the cities from rural areas.