The Table Below Shows Cost Data for a Firm That

The table below shows cost data for a firm that is selling in a purely competitive market. Refer to the above table.If the market price for the firm's product is $180,the competitive firm will produce:

A) 6 units at an economic profit of $100.
B) 6 units at an economic profit of $120.
C) 7 units at an economic profit of $238.
D) 7 units at an economic profit of $278.
The firm's profit-maximizing output is 7,where MC = MR.At that output,total revenue is $180 * 7 = $1260 and total cost is $146 * 7 = $1022,so profit is $238.