[单选题]
A snowmobile manufacturer that uses LIFO begins the year with an inventory of 3,000 snowmobiles, at a carrying cost of $4,000 each. In January, the company sells 2,000 snowmobiles at a price of $10,000 each. In July, the company adds 4,000 snowmobiles to inventory at a cost of $5,000 each. Compared to using a perpetual inventory system, using a periodic system for the firm's annual financial statements would:
A.Increase COGS by $2 million.
B.Leave ending inventory unchanged.
C.Decrease gross profit by $4 million.