一道争议题，搜了各大论坛都没有个结论...求牛人指教！

peacefuljoy

被这道题折磨得睡不着，花了1个多小时，把各大论坛关于这道题的帖子和回复全看了一遍，没有一个有说服力的解释...
求高手给讲解一下

Rivaling the pyramids of Egypt or even the ancient cities of the Maya as an achievement, the army of terra-cotta warriors created to protect Qin Shi Huang, China’s first emperor, in his afterlife is more than 2,000 years old and took 700,000 artisans more than 36 years to complete them.

A. took 700,000 artisans more than 36 years to complete them
B. took 700,000 artisans more than 36 years to complete it
C. took 700,000 artisans more than 36 years to complete
D. 700,000 artisans took more than 36 years to complete
E. to complete them took 700,000 artisans more than 36 years

如果去掉多余的修饰成分，句子主干就是 the army is more than 2,000 years old and (the army) took...
根据句中的“is”可以判断，把army当成单数，所以A中用“them”不对。
答案到底是B 还是C ？也就是最后那个it到底要不要省略？
不省略的话觉得怪怪的，就好像“the book took me 3 days to read it. "     it 在这里到底是否多余？
标准答案我不知道究竟是哪个，因为看到好几个不同的版本了。

求解答. 先谢谢大家啦！

谢谢大家，我终于在OG12找到原题了，确实是C.不过在OG12里面这道题的划线部分和选项的顺序都变了 对应OG12 第61题的A选项的
这道是GWD里面的，不知道为什么下载的GWD答案好多好多错的..害死我了-_____-b

sdcar2010

C is right to me.  

sdcar2010

The book took me 3 hours to read.

It took me tree hours to read the book.