Use the Table Costs for Alina's Apple Pies

Use the table Costs for Alina's Apple Pies. If Alina's Apple Pies operates in a perfectly competitive market and the market price for a pie is $18, how many pies should Alina's Apple Pies produce?
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A) 10,000 pies
B) 5,000 pies
C) 3,000 pies
D) 6,000 pies