The units of Manganese Plus available for sale during the year were as follows: Mar. 1 June 16 Nov. 28 Inventory Purchase 21 units @$30 $630 31 units @$35 1,085 Purchase 46 units $39 1,794 98 units $3,509 There are 14 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