【求助】GWD-6-Q32 两个答案的比较

At the annual stockholders meeting, investors heard apresentation on the numerous challenges facing the company, including amongthem the threat from a rival’s multibillion-dollar patent-infringement suit andthe declining sales for the company’s powerful microprocessor chip.

A.   including among them the threat from arival’s multibillion-dollar patentinfringement suit and the declining sales for

B.   which includes the threat of a rival’smultibillion-dollar patent-infringement suit and declining sales of

C.   included among these the threat from arival’s multibillion-dollar patentinfringement suit as well as a decline insales for

D.   among them the threat of a rival’smultibillion-dollar patent-infringement suit and the decline in sales of

E.    among these the threat from a rival’smultibillion-dollar patent-infringement suit as well as the decline in salesfor

D 中的 among...在句子中做什么成分

比较A和D， A唯一不好的地方是the declining sales for 。。。
可是用including 是不是更好些？