Suppose That More Police and Security Workers Become Aware That

Multiple Choice

Suppose that more police and security workers become aware that wearing bulletproof vests can protect them from injury and decide to start wearing bulletproof vests.At the same time,the price of ceramics used to produce the vests falls.The equilibrium price of bulletproof vests _____ and the equilibrium quantity produced _____.

A) increases;increases
B) decreases;decreases
C) probably changes,but in an ambiguous direction;probably changes,but in an ambiguous direction
D) probably changes,but in an ambiguous direction;increases