Which of the Following Would NOT Be a Good Idea

Which of the following would NOT be a good idea in an area that has a high risk for earthquakes?

A) Construct all new buildings using rigid concrete or masonry.
B) Keep enough food and water for 72 hours in an easily-carried backpack.
C) Have hospitals install computerized earthquake warning systems that will shut down natural gas systems and turn on back-up generators.
D) Require that new buildings be built to flex easily.
E) All of these would be a good idea.