The units of Manganese Plus avaliable for sale during the year were as follows: There are 17 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 welghted average cost methods. Round intermediate calculations and final answer to two decimal places