Which of the Following Is Not One of the Limitations

Which of the following is not one of the limitations of the three models on the internal social structure of the city?

A) The models are too simple and fail to consider the variety of reasons that lead people to select particular residential locations.
B) The three models are all based entirely on conditions in the U.S.
C) Critics question their relevance to contemporary urban patterns in the United States and in other countries.
D) Models are simplifications, and we must remember that not everyone with the same characteristics will live in the same neighborhood.
E) The models all assume that over time, cities will evolve to accommodate critical changes in demography and adapt to the the growing needs of the urban poor.