请教PREP第一套的159题

159.
                (33521-!-item-!-188;#058&006923)

As the former chair of the planning board for 18 consecutive years and a board member for 28 years, Joan Philkill attended more than 400 meetings and reviewed more than 700 rezoning applications.

(A) As the former

(B) The former

(C) Former

(D) She was

(E) As the

答案是E，我可以理解。

但是讲解上说A和B的former用的不符合逻辑，我不明白是什么意思？

为什么不符合逻辑？

请各位高人帮我讲解一下！

谢谢了

attended more than 400 meetings 和 reviewed more than 700 rezoning applications这两个动作是作为chair时做的,不是作为前任chair做的.

也就是说,如果用former的话,表示这两个动作是在卸任以后做的.没有former时,表示在任时做的.