Many cities built fallout shelters and ran practice drills in order to

Its either A or B because I know that fallout shelters would've virtually done nothing but help the psyche of people and put them at peace with the situation but I'm not for sure on which one would be correct.

A .protect the population
B. pretend all would be well and ease American's fears
C. show strength to other regions
D. model proper safety for the children