如果题目问的是inventory value，应该是影响BS表里的存货项的吧？

问题如下：

Like many technology companies, TechnoTools operates in an environment of declining prices. Its reported profits will tend to be highest if it accounts for inventory using the:(assume the companies use a periodic inventory system)

选项：

FIFO method.

LIFO method.

weighted average cost method.

解释：

B  is correct.

In a declining price environment, the newest inventory is the lowest-cost inventory. In such circumstances, using the LIFO method (selling the newer, cheaper inventory first) will result in lower cost of sales and higher profit.

解析：问使用哪种方法的profit最高，等同于问使用哪种方法的COGS最低。现在是价格下降的市场，如果想让COGS低，就得让COG接近现在的市场价格，那么就是LIFO方法。后进先出意味着最新采购的存货先卖掉，COGS反映的是最新采购的存货价格，也就是更低的价格。COGS低，profit就高。