1- When an increase in plant size shifts the ATC curve down and to the right, we know production involves:

A. Constant Economies of Scale.

B. Economies of Scale.

C. Dis-economies of Scale.

D. none of the above

2- When an increase in plant size shifts the ATC curve up and to the right we know production involves:

A. Constant Economies of Scale.

B. Economies of Scale.

C. Dis-economies of Scale.

D. None of the above.

3- When an increase in plant size causes ATC to shift horizontally to the right, we know production involves:

A. Constant Economies of Scale.

B. Economies of Scale

C. Dis-economies of Scale.

D. Not enough information.