On its 2019 balance sheet, Samsung Inc. showed $510 million of inventories, and exactly that same amount was shown the previous year. Assuming that there is no restatements of the financial statements, which of the following statements is correct?

The companys revenues in 2019 is equal to the revenues in 2018.

The company changed its inventory policy from LIFO to FIFO in 2019.

The companys profit margin on inventory remains the same in 2019 compared to 2018.

The companys inventory purchase in 2019 equal to its cost of goods sold on the income statement.