LIFO;FIFO;WAC required please

Problem 6-3A Perpetual: Alternative cost flows LO P1 Montoure Company uses a perpetual inventory system. It entered into the followingc Units Sold at Retail Date Activities Jan. 1 Beginning inventory Feb. 10 Purchase Mar. 13 Purchase Mar. 15 Sales Aug. 21 Purchase Sept. 5 Purchase Sept. 10 Sales Units Acquired at Cost 600 units $40 per unit 360 units $37 per unit 150 units $25 per unit 765 units $80 per unit 200 units $45 per unit 580 units@ $42 per unit 780 units@ $80 per unit Totals 1,890 units 1,545 units Required: 1. Compute cost of goods available for sale and the number of units available for sale