Quantity (pounds of cookies) 1 Total revenue (dollars) Total cost (dollars) 15 30 2 13 24 39 58 3 45 60 4 5 75 81 The table above gives the total revenue and total cost for a perfectly competitive firm producng chocolate chip cookies. If the firm is producing 4 pounds of cookies, to maximize its profit it will Select one: a. increase its output. b. continue producing 4 pounds of cookies c. decrease its output. O d. shut down