Graph 13-4 -Refer to Graph 13-4.Which of the Following Can Be Inferred

Multiple Choice

Graph 13-4
-Refer to Graph 13-4.Which of the following can be inferred from the figure shown?
(i) marginal costs vary for different levels of output
(ii) diminishing marginal product does not occur directly after the first worker
(iii) marginal product of the second worker exceeds that of the first

A) (i) and (ii)
B) (ii) and (iii)
C) (i) and (iii)
D) (i) , (ii) and (iii)