Westland Ltd uses the periodic inventory system and has the following inventory information for the month of February 2021: Date Detail Units Cost per unit 1-Feb Inventory 2,700 $30 9-Feb Purchase 6,800 $33 17-Feb Purchase 1,400 $35 28-Feb Inventory 3,000 Required Answer the following independent questions. a) Assume that the company uses the FIFO method. The value of the cost of the ending inventory at 28 February 2021 is $_ b) Assume that the company uses the LIFO method. The value of the cost of the ending inventory at 28 February 2021 is $_ c) Assume that the company uses the average method. The value of the cost of sales at 28 February 2021 is $_