Diminishing marginal returns begin to occur between units :
A. 2 and 3
B. 3 and 4
C. 4 and 5
D. 5 and 6
Answer:C
Diminishing marginal returns begin to occur between units :
A. 2 and 3 B. 3 and 4 C. 4 and 5 D. 5 and 6