OG10TH 201 并列的词组前能用a吗？？？？

即OG11TH 132题

201. One view of the economy contends that a large drop in oil prices should eventually lead to lowering interest rates, as well as lowering fears about inflation, a rally in stocks and bonds, and a weakening of the dollar.

(A) lowering interest rates, as well as lowering fears about inflation,

(B) a lowering of interest rates and of fears about inflation,

(C) a lowering of interest rates, along with fears about inflation,

(D) interest rates being lowered, along with fears about inflation,（B）

(E) interest rates and fears about inflation being lowered, with

请问

B选项中的a lowering of interest rates and of fears about inflation，有两个并列的词组用 and 连接，为什么能用a 放在前面呢？？？？？？？？？？？？

同问，虽然其它选项都破坏了并列结构，但是楼主这个问题有必要讨论一下

"a" modifies lowering, while "and" connects "of interest rate" and "of fears abou inflation", both modifying "lowering" as well.

注意中心词的使用,一般情况下都是修饰的中心词,特殊情况(限定定语从句的修饰),仔细体会

我看过的一个不错的解释是：
 a lowering of interest rates and of fears about inflation其实有省略
a lowering of interest rates and （a lowering）of fears about inflation。
这样看起来是不是很对称？而且与后面并列a rally in stocks and bonds, and a weakening of the dollar。

谢谢这么多人回答呢，今天上来可高兴了，都有人回答。仔细想了一下，大家说的都有点道理，我接受mymengming的理论，和madben的解释。fengyun1的并列有助于我的理解，但是还有前面的好。fengyun1别拍我啊。。。

再谢一下，吃个冰镇小瓜吧。