The passage provides information that supports which of the following statements?
(A) Excess inventory results most often from insufficient market analysis by the manufacturer.
(B) Products with slight manufacturing defects may contribute to excess inventory.
(C) Few manufacturers have taken advantage of the changes in the federal tax laws. 答案是B。可是C有什么问题？文中不是很清楚的说The managers of these companies are not deliberately wasterful: they are simply unaware of all their alternatives.从最后一段不是能说明很少厂商利用新的纳税政策，把过多库存捐给慈善机构吗？ | 
