Econ questionnnnnnnnnnnn!?

Question

To increase output in the short run, a firm must ____

To increases output in the long run, a firm ____

A. change its technology; can vary any factor of production but it must vary them one factor at a time.

B. change its technology' is able to choose whether to change its plant as well as the quantity of labor it hires.

C. increase the quantity of a variable factor of production;is able to choose whether to change its plant as well as the quantity of labor it hires.

D. increase the quantity of a variable factor of production; can vary any factor of production but it must vary them one factor at a time.

please explain! thanks!!

Answer 1

C. increase the quantity of a variable factor of production;is able to choose whether to change its plant as well as the quantity of labor it hires.

Technology is variable in long-run but not in short-run, so A&B can be excluded due to wrong sequence.

It actually doesn't matter if one or more factors are changed at the same time, so D is false, thus only C remains.