Use the Figure Below to Answer the Following Questions

Use the figure below to answer the following questions. Figure 18.3.5
-Refer to Figure 18.3.5.This figure shows the labour supply curves and the value of marginal product curves for high-skilled and low-skilled workers.If the labour markets are competitive,then for a 40-hour work week,high-skilled workers must be paid

A) an extra $9 to compensate for the cost of acquiring their human capital and for their increased productivity.
B) an extra $60 to compensate for the cost of acquiring their human capital and for their increased productivity.
C) an extra $360 to compensate for the cost of acquiring their human capital and for their increased productivity.
D) an extra $900 to compensate for the cost of acquiring their human capital and for their enhanced productivity.
E) an extra $540 to compensate for the cost of acquiring their human capital and for their increased productivity.