The eggs market is currently in equilibrium. Your city passes a law that egg prices may not decrease below the current equilibrium price point. What will happen in that market if the firm's costs of production decrease?

a. The quantity exchanged in the market will decrease.
b. The quantity exchanged in the market will increase.
c. The quantity exchanged in the market will not change.
d. The quantity exchanged in the market may increase, may decrease, or may remain unchanged.