Suppose That a Competitive Market Is Initially in Long-Run Equilibrium

Multiple Choice

Suppose that a competitive market is initially in long-run equilibrium. Which of the following are the most likely results of an increase in market demand?

A) Existing firms will produce less and some firms will exit the market so that the market supply curve will shift to the left.
B) Some existing firms will produce more while some other firms will exit the market so that the market supply curve will remain the same.
C) Existing firms will produce more and new firms will enter the market so that the market supply curve will shift to the right.
D) Existing firms will produce less while new firms will enter the market so that the effect on the market supply curve is uncertain.
E) Nothing will change in the market.