Use the Following Figure to Answer the Question : Figure

Multiple Choice

Use the following figure to answer the question : Figure 18-2 :
shows the demand and supply curves of labor.A per-unit tax imposed on the wage income of the employees shifts the supply curve of labor upward.
-Refer to Figure 18-2.The per-unit tax is this figure is being represented by the distance:

A) OB.
B) OA.
C) AB.
D) AC.