For a monopolistically competitive firm, productive efficiency in the long run is like

A. putting a right foot into a left shoe.

B. putting a size 4 foot into a size 6 shoe.

C. putting a size 4 foot into a size 2 shoe.

D. putting a size 4 foot into a size 4 shoe.

The mutual interdependence in oligopoly is most similar to two people

A. holding hands.

B. playing chess.

C. on a tandem bicycle.

D. watching a movie together.

(4) (3) Dollars (1) (2) 0 Quantity Curve (3) in the diagram above is a purely competitive firm's A. total cost curve. O B. total economic profit curve. C. total revenue curve. O D. marginal revenue curve