问题如下：
Eric’s Used Book Store prepares its financial statements in accordance with IFRS. Inventory was purchased for £1 million and later marked down to £550,000. One of the books, however, was later discovered to be a rare collectible item, and the inventory is now worth an estimated £3 million. The inventory is most likely reported on the balance sheet at:
选项：
A.£550,000.
B.£1,000,000.
C.£3,000,000.
解释：
B is correct.
Under IFRS, the reversal of write-downs is required if net realisable value increases. The inventory will be reported on the balance sheet at £1,000,000. The inventory is reported at the lower of cost or net realisable value. Under US GAAP, inventory is carried at the lower of cost or market value. After a write-down, a new cost basis is determined and additional revisions may only reduce the value further. The reversal of write-downs is not permitted.
解析：国际准则下，减值损失可以回转，但又不能超过Cost。现在存货价值3million，cost=1million，所以只能回转到1million。
回转最多回到之前的价格，也就1million
可是之前价格下降到5500000，那么，难道不用先弥补这部分的下跌，剩下的才记到资产负债表里吗？
老师不是说，要先弥补之前的？
