It Is Clear That a Critical Assumption Behind the Concentric

Multiple Choice

It is clear that a critical assumption behind the concentric zone model of a city is that it has an isotropic surface,meaning that the model city

A) is flat, uniform and barrier free.
B) does not have motorized transportation.
C) only has streets that are parallel and perpendicular to each other.
D) has high buildings in the center which get lower with distance outward.
E) is located on a slope, like a mountain side.