(Figure: Profit Maximization in Monopolistic Competition) Use Figure: Profit Maximization in Monopolistic Competition.If other firms see economic profits in the industry,they will enter it,and the demand curve for firms already in the industry will shift to the _____;in the long run,this will result in an economic profit _____ zero and a price _____ ATC.

A) right;equal to;equal to
B) right;greater than;greater than
C) left;less than;less than
D) left;equal to;equal to

Economic Profit

The difference between a firm's total revenues and its total costs, including both explicit and implicit costs, measured in terms of opportunity costs.

Long Run

A period in economics where all factors of production and costs are variable, allowing full adjustment to changes.

Demand Curve

A diagram that illustrates the connection between a product's price and the amount of the product that buyers are prepared and capable of buying at different price levels.