Figure 6.3 -Figure 6.3 Shows the Cost Structure of a Firm in Firm

Figure 6.3
-Figure 6.3 shows the cost structure of a firm in a perfectly competitive market. If the market price is $3 and the firm produces the output where MR = MC, its profit is

A) -$300.
B) -$600.
C) -$900.
D) -$1,200.