Purrfect Pets uses the perpetual inventory system. At the beginning of the quarter, Purrfect Pets has $31,000 in inventory. During the quarter the company purchases $8,050 of new inventory from a vendor, returned $800 of inventory to the vendor, and took advantage of discounts from the vendor of $210. At the end of the quarter the balance in inventory is $27,000. What is the cost of goods sold?

$12,550

$12,050

$4,000

$11,040