12. T-Shirt City uses a periodic inventory system. During the first year of operations, the company made four purchases of a particular product. and the prices paid were $9 per unit in the first purchase, $10 per unit in the second purchase, $12 per unit in the third purchase, and $13 per unit in the fourth purchase. At year-end, 650 of these units remained unsold. Compute the cost of goods sold under the FIFO and LIFO methods, respectively. Each purchase was for 500 units