The units of Manganese Plus available for sale during the year were as follows: Mar. 1 $704 June 16 Inventory Purchase Purchase 22 units @ $32 31 units @ $32 41 units $39 Nov. 28 992 1,599 $3,295 94 units There are 12 units of the product in the physical inventory at November 30. The periodic inventory system is used 3. Determine the inventory cost by the Firo method b. Determine the inventory cost by the LIFO method. c. Determine the inventory cost by the weighted average cost methods, Round intermediate calculations and final answer to two decimal places