Help with calculating cost of goods sold. Please be descriptive on how to find the answer.

Inventory Costing Methods-Perpetual Method Merit Company uses the perpetual inventory system. The following May data are for an tem in Mernitts i ventor the perpetual inventory system. The following May data are for an item in Merritt's inventory May 1 Beginning inventory 450 units e $34 per unit 12 Purchased 16 Sold 24 Purchased 400 units $39 per unit 480 units 460 units 40 per unit Calculate the cost of goods sold for the May 16 sale using (a) first-in, first-out, (b) last-in,first-out and (c) the weighted- average cost methods. Round your final answers to the nearest dollar. For weighted-average cost, do not round the weighted-average unit cost. A First-in, First-out Cost of Goods Sold:16350 x B. Last-in, first.-out Cost of Goods Sold $ C. Weighted-average cost Cost of Goods Sold