Givoly Incorporated uses a periodic inventory system. At the end of the annual accounting period, December $31$ of the current year, the accounting records provided the following information for product $2$:

Units Unit Cost

Inventory, December $31,$ prior year $7,700$ $ $9$

For the current year:

Purchase, March $519,7007$

Purchase, September $1910,7003$

Sale $($$$30$ each$)8,700$

Sale $($$$32$ each$)16,700$

Operating expenses $($excluding income tax expense$)$ $ $407,000$

Required:

Prepare a separate income statement through pretax income that details cost of goods sold for $($a$)$ Case A: FIFO and $($b$)$ Case B: LIFO.

Compute the difference between the pretax income and the ending inventory amounts for the two cases.

Which inventory costing method may be preferred for income tax purposes?$\backslash$