Vargas Company uses the perpetual inventory method. Vargas purchased 400 units of inventory that cost $15.00 each. At a later date the company purchased an additional 800 units of inventory that cost $18.00 each. Vargas sold 500 units of inventory for $27.00. If Vargas uses a FIFO cost flow method, the amount of cost of goods sold appearing on the income statement will be:

a)$7,800

b)$6,000

c)$4,500

d)$5,700