The units of Manganese Plus available for sale during the year were as follows: Mar. 1 16 units @$30 $480 Inventory Purchase June 16 30 units @$35 @$39 1,050 1,755 Nov. 28 Purchase 45 units 91 units 3,285 There are 15 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 all numbers as positive numbers. FIFO Cost of Goods Sold $ LIFO Cost of Goods Sold $ Difference