Tatsoi Companys purchase and sales transactions for the month of May were as follows: Purchases Sales May 1 (beg. balance) 2,000@ 300 May 2 1,200@ 600 7 6,000@ 320 14 4,800@ 600 22 2,000@ 330 28 2,000@ 650 Assuming that the company keeps perpetual inventory records, Tatsois cost of goods sold for the month of May on a LIFO basis is? a. 624,000 b. 2,556,000 c. 3,180,000 d. 5,796,000