9. The figure above shows the costs for the typical grower in the perfectly competitive turnip market. Currently, the price is $1,000 for a ton of turnips. In the long run, the market supply of turnips will
(A) increase and the turnip grower's economic profit will decrease.
(B) increase and the turnip grower's economic profit will increase.
(C) decrease and the price of a ton of turnips will rise to $1,200.
(D) decrease and the price of a ton of turnips will fall to $600. 

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