Based on City, what can be inferred about the people who planned and built Verbonia?
A.They wanted the city to be a place for people to live, but not a place for them to work.
B.They considered issues and problems that might arise in the future and planned solutions for them.
C.They planned the city in such a way that it would not have to change in the future.
D.They focused only on solving problems and issues that had troubled cities in the past.