[单选题]

Why did American city residents want to live in the suburbs after World War Ⅱ?
A． Because older American cities were dying.
B． Because they were richer and needed more space.
C． Because cities contained the wont pare of society.
D． Because they could hardly afford a live in the city.

Why did American city residents want to live in the suburbs after World War Ⅱ?A． Because older American cities were dying.B． Because they were richer and needed more space.C． Because cities contained the wont pare of society.D． Because they could hardly afford a live in the city.