A company ended 2015 with ending inventory consisting of an item that had 4 units at an assigned cost of $5 each for a total of $20. At the end of 2020, which inventory costing method would be most likely to still have ending inventory that included the assigned cost for these 4 units at $5 each?

A) Specific Identification

B) FIFO

C) LIFO

D) Weighted Average