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system Problem 6-6A Alternative cost flows-perpetual LO2, 3 Case Defence sells smartphone cases and uses the perpetual inventory system. The following is information on the purchases and sales of "Defender Box" cases. On October 1, Case Defence had 28 units with a unit cost of $22. Purchases Sales Date Units Unit Cost Units Unit Price Oct. 3 18 23 Oct. 6 23 $58 Oct. 12 28 25 Oct. 19 28 $58 Oct. 23 38 27 Oct. 30 33 $58 Oct. 31 23 28 equired Calculate the dollar value of cost of goods sold and ending inventory for the month of October using the following methods. a. FIFO b. Moving weighted average. Round all unit costs to two decimal places and round all other numbers to the nearest dollar. terisk (") identifies assignment material based on Appendix 6A