NO.PZ2016012101000136
问题如下：
Mustard Seed PLC adheres to IFRS. It recently purchased inventory for €100 million and spent €5 million for storage prior to selling the goods. The amount it charged to inventory expense (€ millions) was closest to:
选项：
A.€95.
B.€100.
C.€105.
解释：
B is correct.
Inventory expense includes costs of purchase, costs of conversion, and other costs incurred in bringing the inventories to their present location and condition. It does not include storage costs not required as part of production.
解析：为了使得存货达到可销售状态而花费的成本计为存货的成本，储藏成本属于当期费用，直接在I/S中确认费用，不能计入存货成本。如果题目明确说了储存成本是production-related的，那么可以计入存货成本。
请问costs of conversion具体指什么？
