​Exhibit Several Congressmen and Senators Have Been Greatly Concerned About the the Fairness

​Exhibit
Several congressmen and senators have been greatly concerned about the fairness of salaries in the marketplace. They are contemplating enacting a law that would fix the wage rate at W_A. Their aides, who were all excellent economics students, have returned with the results of an investigation into the matter, as portrayed below.

-Refer to Exhibit. If the law was to impose a wage rate of W_A on the K-12 teachers market:

A) the quantity of K-12 teachers demanded would decrease.
B) a surplus of K-12 teachers would soon result.
C) a quantity of Q₃ teachers would be supplied to the marketplace.
D) all of the above would occur.