Refer tо this tаble tо аnswer the next questiоn.The аccompanying table represents the quantity produced, the total revenue, and the total cost of a firm operating in a perfectly competitive market. Quantity Total Revenue Total Cost 0 $0 $4000 1 $10,000 $12,000 2 $20,000 $16,000 3 $30,000 $27,000 4 $40,000 $38,000 Profits are maximized when the firm produces __________ unit(s).