请教 新PREP1-106

DeliciaAn

这道题目的粗体画错了吧？
这是曼哈顿论坛的boldface处。如果是这种的话，那么答案就没有争议了。
A prominent investor who holds a large stake in the Burton Tool company has recently claimed that the company is mismanaged, citing as evidence the company's failure to slow production in response to a recent rise in its inventory of finished products. It is doubtful whether an investor's sniping at management can ever be anything other than counterproductive, but in this case it is clearly not justified. It is true that an increased inventory of finished products often indicates that production is outstripping demand, but in Burton's case it indicates no such thing. Rather, the increase in inventory is entirely attributable to products that have already been assigned to orders received from customers.

In the argument given, the two boldfaced portions play which of the following roles?

就是B了啊。
Source: https://www.manhattanprep.com/gmat/forums/burton-tool-bold-face-t9823.html