REl selis snowboards. Assume the following information relates to REs purchaies ot snowboardi during September. (a) Compute the ending inventory at September 30 using FIFO, LFO, and awerage-cost. (Round averese cest per (b) Compute the cost of eoodssoid for the month using the FIFO, LFO, and averoee cost methods. (in ound averoge cast per unit to s decimal placet, e.g. 125.15.3 and finot answeri to o decimal places, e.8. 125.)