问题如下：
What is the value of ending inventory for the first quarter if the company uses a perpetual LIFO inventory valuation method?
选项：
A.$14,500
B.$15,000
C.$16,000
解释：
A is correct.
A perpetual inventory system updates inventory values and quantities and
cost of goods sold continuously to reflect purchases and sales. The ending inventory of
800 units consists of 300 units at $20 and 500 units at $17.
(300 × $20) + (500 × $17) = $14,500
Table 1 的表格里面错了，漏了一行， Mar 23， sell 500 units ,selling price 50
1年前有人提出的问题，还没有修正
