he units of Manganese Plus available for sale during the year were as follows: Mar. 1 Inventory Purchase 23 units @ $32 31 units @ $35 $736 June 16 1,085 Nov. 28 Purchase 39 units @ $39 1,521 93 units $3,342 There are 10 units of the product in the physical inventory at November 30. The periodic inventory system is used. a. Determine the inventory cost by the FIFO 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