问题如下：
A firm has a higher inventory turnover and lower sales growth than industry's average level, which of the following is most likely for the firm?
选项：
A.The firm is managing its inventory effectively and timely.
B.The firm has obsolete inventory requiring a write-off.
C.The firm may be losing sales for inadequate inventory.
解释：
C
A company with high inventory turnover and low sales growth may be indicate the inadequate inventory level. And the company may be losing sales for inadequate inventory.
老师 sale growth的公式是什么？
为什么B 不能选？
