Table 18-10 -Refer to Table 18-10. This Table Describes the Number of the Number

Multiple Choice

Table 18-10
-Refer to Table 18-10. This table describes the number of baseballs a manufacturer can produce per day with different quantities of labor. Each baseball sells for $5 in a competitive market. What is the marginal revenue product of the third worker?

A) 120 baseballs.
B) $300
C) $400
D) $600