Calculator The units of Manganese Plus available for sale during the year were as follows: Mar. 1 Inventory 23 units @ $31 $713 June 16 Purchase 30 units @ $30 900 Nov. 28 Purchase 39 units @ $39 1,521 92 units $3,134 There are 17 units of the product in the physical inventory at November 30. The periodic inventory system is used. Determine the difference in gross profit between the LIFO and FIFO inventory cost systems. Enter the answer as a positive nur FIFO Cost of Goods Sold LIFO Cost of Goods Sold Difference