Which is not true of a perfectly competitive market? a. at the long-run equilibrium, economic profit is less than accounting profit. b. there is no incentive to innovate since economic profit is zero in the long-run c. the typical industry demand curve is downward sloping d. if the long-run average total cost curve is horizontal in the relevant range of production, perfectly competitive firms can be various sizes in long-run equilibrium

B is the correct option.

Explanation:

In theory, the perfect market is the structure in which all the firms sell identical products,They all are price takers, the market share doesn't influence the prices, firms can enter or exit the market without cost and resources are perfectly mobile. No markets are in the sphere of the perfect competition model. so they are classified as imperfect. The imperfect and perfect market is the outcome of post-classical economic thought of the Cambridge tradition.

the specific actions take by the fed. what the fed was attempting to do by taking these actions. the result of the actions taken by the fed