Figure 18-7 -Refer to Figure 18-7.Assume W₁ = $20 and W₂ =

Multiple Choice

Figure 18-7
-Refer to Figure 18-7.Assume W₁ = $20 and W₂ = $18 and the market is always in equilibrium.Then the shift of the labor supply curve from S₁ to S₂

A) increases the value of the marginal product of labor by $2.
B) decreases the value of the marginal product of labor by $2.
C) decreases the value of the marginal product of labor by more than $2.
D) does not change the value of the marginal product of labor.