Suppose a new law requires approves piercing studios to get less costly sterilization methods. Other things remaining constant, this law would cause

a) an increase in the supply of piercings and a lower price for piercings

b) an increase in the supply of piercings and a higher price for piercings

c) a decrease in the supply of piercings and a higher price for piercings

d) a decrease in the supply of piercings and a lower price for piercings