Why Is There a Discrepancy Between Long-Term and Short-Term Effects

Multiple Choice

Why is there a discrepancy between long-term and short-term effects of a change in demand?

A) The market is slow to understand most changes.
B) The market waits to see if the change is permanent.
C) Equilibrium situations always take time to settle down.
D) There is a cost associated with adapting to the market.