A regulation that sets the lowest price at which it is legal to trade a good is a

Which of the following is a situation that makes the market behave inefficiently?

a) when consumers do not have enough information to make good choices b) when the producers have the power to find out exactly what to produce c) when both consumers and producers are fully informed about a product d) when the market is in perfect competition and prices are high

Over time in a growing economy, the long-run aggregate supply curve will

A) become horizontal at the long-run potential price level. B) shift rightward. C) shift leftward. D) become increasingly steep.