The Following Table Shows the Total Output Produced in a Factory

Multiple Choice

The following table shows the total output produced in a factory at various levels of employment of labor.The firm sells each unit of output at $2 and each worker is paid a wage of $32.
Table 5-1

-Refer to Table 5-1.When the firm employs _____ workers,marginal profit per unit of output is at its maximum.

A) 7
B) 5
C) 6
D) 3
E) 9