Westside Ltd uses the periodic inventory system and has the following inventory information for the month of March 2021: Date Unit Cost 11-March Detail Inventory Purchase Purchase Units 3,000 4,000 $180 9- March $190 18- March 1,500 $195 31- March Inventory 1,700 Required: Answer the following independent questions. a) Assume that the company uses the FIFO method. The value of the cost of ending inventory at 31 March 2021 is $_ b) Assume that the company uses the average cost method. The value of the cost of ending inventory at 31 March 2021 is $_ c) Assume that the company uses the LIFO method. The value of the cost of sales at 31 March 2021 is $