In the long run,

A) inputs that were fixed in the short run remain fixed.
B) inputs that were fixed in the short run become variable.
C) inputs that were variable in the short run become fixed.
D) variable inputs are rarely used.

Fixed Inputs

Resources or factors of production, such as land or capital, that remain constant regardless of the level of output or production.

Variable Inputs

Resources or inputs whose quantity can be changed in the short term to adjust the level of production.