[求助]新东方语法分册上几个疑问

Alaska regularly deposits some of its profits from the sale of oil into a special fund,with the intention to sustain the state's economy after the exhaution of its oil reserves.

A.

B.fund,the intention of which is to sustain the state's economy after they have exhausted their oil reserves

C.fund intended to sustain the state's economy after oil reserves are exhausted

D.fund intended to sustain the state's economy after exhausting its oil reserves

E.fund that they intend to sustain the state's economy after oil reserves are exhausted

答案是C

B.E可以排除因为they,their单复数不对

关键是intend 是修饰谁?

with the  intention 跳跃修饰Alaska

intended 修饰fund

而动词优于抽象N优于分词.所以排除D

这样理解对吗?

另外,in contrast with A,B

A.B要平行,是吗?

The record of the past is always incomplete,and the historian who writes about it inevitably reflects the preoccupations of their own time.
答案是 E historian in writing about it inevitable reflect

B the historyian writing about it will inevitably reflect
C a historian writing about it inevitably reflects
D writing about it ,it is inevitable for historians to reflect

不明白??