问题如下：
In late expansion, the inventory to sales ratio typically:
选项：
A.remains constant.
B.decreases.
C.increases.
解释：
C is correct. In late expansion, sales become to grow slowly and unsold inventories are increasing, therefore the inventory to sales ratio typically increases.
考点：Typical business cycle characteristics
解析：在经济的后期的扩张中，厂商销售增长缓慢，未售出的库存也开始在增加，因此库存与销售的比率通常会增加。
老师，存货不是个滞后指标吗？不是应该在下一阶段存货/收入才会出现过多吗？
