The units of Manganese Plus available for sale during the year were as follows: Mar. 1 Inventory June 16 Purchase 25 units @ $29 $725 28 units @ $31 868 Nov. 28 Purchase 41 units @ $37 1,517 94 units $3,110 There are 15 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. $