Which one of the following is not an assumption or principle of the concentric zone model of urban land case?

There is a concentration of heavy industry.

Cultural and social heterogeneity of the population

Transport is equally easy, rapid and cheap in every direction within the city.

None of districts is attractive due to differences in terrain.

Which one of the following is not an assumption or principle of the co

1.	Which one of the following is not an assumption or principle of the concentric zone model of urban land case?
A.	Cultural and social heterogeneity of the population
B.	Transport is equally easy, rapid and cheap in every direction within the city.
C.	None of districts is attractive due to differences in terrain.
D.	There is a concentration of heavy industry.
Answer» D. There is a concentration of heavy industry.