4. RJ Corporation has provided the following information about one of their inventory items Number of UnitsCost per Unit $3.200 $3.600 Date Transaction Beginning Inventory Purchase Purchase 400 800 o 6 $4.000 $4.200 1.200 9 10 15 Purchase 800 11 During the year, 3,000 units were sold. Cost Method Calculate the CoGS and Ending Inventory under the FIFO and Average