Which of the Following Statements About Pure Competition in the Long

Which of the following statements about pure competition in the long run is not true?

A) Entry and exit of firms will push economic profits of firms in the industry toward zero.
B) Entry and exit of firms will shift the demand curve facing the representative firm in the industry.
C) The long-run adjustment in pure competition happens through shifts in the industry supply curve.
D) The long-run adjustment in pure competition happens through shifts in the industry demand curve.