OG10-74:请教分号和连接词的用法？谢谢。

74.
Growing competitive pressures may be encouraging auditors to bend the rules in
favor of clients; auditors may, for instance, allow a questionable loan
to remain on the books in order to maintain a bank's profits on paper.

(A) 
clients; auditors may, for instance, allow

(B) 
clients, as an instance, to allow

(C) 
clients, like to allow

(D)  clients,
such as to be allowing

(E)   clients;
which might, as an instance, be the allowing of

答案选E。我想问的是，这里for instance已经算是连接词了吧，为什么还需要用分号呢？查了一下语法书，说一般没有连接词用分号，但确实没有说有连接词一定不能用。呵呵，复习句子完成性时，看到这道题想到的。请指点。谢谢。