What was one effect of the popularity of suburbia in the 1950s?

a. whites moved out of the cities, taking their wealth with them.
b. housing prices shot up, and soon thee middle class could not afford to live there.
c. women, who weren't working 9 to 5, became important players in town policies.
d. light rail train systems sprang up to transport people between city and suburb.
e. automobiles became more expensive because demand was very high.