Calculator The units of Manganese Plus available for sale during the year were as follows: Mar. 1 Inventory 23 units $29 $667 June 16 Purchase 27 units $34 918 Nov. 28 Purchase 37 units $35 1,295 87 units $2,880 There are 11 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 number. FIFO Cost of Goods Sold LIFO Cost of Goods Sold Difference