The Long Run Refers To

Multiple Choice

The long run refers to:

A) a time period long enough for the prices of both output and inputs to adjust to changes in the economy.
B) any time period of more than a year.
C) a time period in which input prices can change but output prices have not had time to adjust.
D) a time period in which output prices can change but input prices have not had time to adjust.
E) a time period in which a firm's output doubles.