some help is needed. answer will be greatly reviewed.

Average-Cost: ABC Company carries a merchandise inventory of widgets. ABC uses a periodic inventory system. On January 1,ABC had a beginning inventory balance of $1,500, consisting of 300 units. During January. ABC made the following purchases (1,100 total units) and sales ( 1,050 total units ) : Jan. 3 Purchased 200 units at $6/ unit. Jan. 9 Sold 250 units at $10/ unit Jan. 13 Purchased 500 units at $7/ unit Jan. 24 Sold 600 units at $11 /unit a. Using the FIFO cost flow method, determine (a) cost of goods sold and (b) ending inventory. b. Using the LIFO cost flow method, determine (a) cost of goods sold and (b) ending inventory. c. Using the Average-Cost cost flow method, determine (a) cost of goods sold and (b) ending inventory