The units of Manganese Pius avallable for sale during the year were as follows: There are 13 units of the product in the physical inventory at November 30 . The periodic inventory system is used. a. Determine the inventory cost by the FFO method. 5 b. Determine the inventory cost by the Lifo method. 5 c. Determine the ifventory cost by the weighted average cost methods. Round Intermediate calculations and final answer to two decimal places