Table 18-3 -Refer to Table 18-3.This Table Describes the Number of Baseballs

Multiple Choice

Table 18-3

-Refer to Table 18-3.This table describes the number of baseballs a manufacturer can produce per day with different quantities of labor.Each baseball sells for $2.50 in a competitive market.What is the marginal revenue product of the fourth worker?

A) $200
B) $300
C) $400
D) $500