According to the Law of Variable Proportions, the second stage of production ends when
A. Marginal productivity of the variable input becomes maximum.
B. Both marginal productivity and average productivity of the variable input are equal.
C. Marginal productivity of the variable input becomes zero and average productivity is positive.
D. Marginal productivity of the variable input is negative but average productivity is positive.
Answer:C
According to the Law of Variable Proportions, the second stage of production ends when
A. Marginal productivity of the variable input becomes maximum. B. Both marginal productivity and average productivity of the variable input are equal. C. Marginal productivity of the variable input becomes zero and average productivity is positive. D. Marginal productivity of the variable input is negative but average productivity is positive.