Answer and steps to part (b) please.

Powder, Inc. sells an Xpert snowboard that is popular with snowboard enthusiasts. The following information shows Powder's purchases and sales of Xpert snowboards during November: - Your answer is correct. Determine the cost of goods sold and ending inventory using (1) FIFO and (2) average cost, assuming Powder uses a perpetual inventory system. (Round FIFO answers to the nearest whole dollar, e.g. 5,275 and Average cost answers to 2 decimal places, e.g. 15.25. Do not round intermediate calculations.) - Your answer is incorrect. Determine the cost of goods sold and ending inventory using (1) FIFO and (2) average cost, assuming Powder uses a periodic inventory system. (Round FIFO answers to the nearest whole dollar, e.g. 5,275 and Average cost answers to 2 decimal places, e.g. 15.25. Round per unit cost to 2 decimal places, e.g. 15.25.)