Use the Figure Below to Answer the Following Questions

Use the figure below to answer the following questions.

Figure 18.3.3
-Refer to Figure 18.3.3. For the monopsonist employer illustrated in this figure, the profit-maximizing wage rate is ________ and the quantity of labour hired is ________.

A) $9 per hour; 300 hours
B) $8 per hour; 350 hours
C) $8 per hour; 500 hours
D) $7 per hour; 400 hours
E) $6 per hour; 300 hours