NO.PZ2016012102000112
问题如下：
Under LIFO, XYZ company reported COGS of $500,000, and ending inventory of $600,000 in 2017, and in the footnotes record LIFO reserve increased $10,000, if XYZ company change accounting method, LIFO change to FIFO method, its cost of goods sold was:
选项：
A.$510,000
B.$500,000
C.$490,000
解释：
C is correct.
FIFO COGS = LIFO COGS –△LIFO reserve
=500,000-10,000=490,000.
LIFO中先卖的是Last in，那么COGS不是应该低吗，同理FIFO的COGS应该比较高，为什么LIFO到FIFO还是减去10000呢，知道公式是这样但是不理解逻辑
