Use the Following to Answer Question

Multiple Choice

Use the following to answer question:
-(Figure: Game-Day Shirts) Use Figure: Game-Day Shirts.Rick is one of 10 vendors who sell game-day T-shirts at football games in a perfectly competitive market.His costs are identical to the costs of the other 9 vendors.If the industry is in long-run equilibrium,how many shirts will each vendor sell?

A) 14
B) 20
C) 22
D) 24