Answer the question on the basis of the following output data for a firm. Assume that the amounts of all nonlabor resources are fixed.
Number of Workers
Units of Output
0
0
1
40
2
90
3
126
4
150
5
165
6
180
Diminishing marginal returns become evident with the addition of the:
Select one:
A. second worker
B. third worker
C. fourth worker
D. sixth worker