Even the Threat of War Is Hazardous to Well-Being, as Illustrated

Even the threat of war is hazardous to well-being, as illustrated by the fact that _____.

A) potential enemies significantly increase depression in a population
B) producing and storing weapons involves hazardous waste materials even if the weapons are never used
C) it is hard to maintain a healthy economy when a nation must stay prepared for war
D) all of these answers are correct