[求助]请教关于GWD14-29的问题~

Q29:

Faulty voting equipment, confusing ballots, voter error, and problems at polling places have been cited by a new study of the 2000 United States presidential election, which estimated that they did not count 4 million to 6 million of the 100 million votes cast.

1. Faulty voting equipment, confusing ballots, voter error, and problems at polling places have been cited by a new study of the 2000 United States presidential election, which estimated that they did not count 4 million to 6 million of the 100 million votes cast.
2. Citing faulty voting equipment, confusing ballots, voter error, and problems at polling places, a new study of the 2000 United States presidential election has estimated that 4 million to 6 million of the 100 million votes cast were not counted.
3. Citing faulty voting equipment, confusing ballots, voter error, and problems at polling places, 4 million to 6 million of the 100 million votes cast were not counted in the 2000 United States presidential election, a new study estimates.
4. A new study has cited faulty voting equipment, confusing ballots, voter error, and problems at polling places in estimating that 4 million to 6 million of the 100 million votes that were cast had not been counted in the 2000 United States presidential election.
5. A new study of the 2000 United States presidential election, citing faulty voting equipment, confusing ballots, voter error, and problems at polling places, has estimated 4 million to 6 million votes had not been counted of the 100 million votes cast.

   Answer: B

-------------------------------------------------------------------------------------------我的疑问是,相对于原文而言,B明显改变了原文的主和从属部分,虽然它的其他表述挺好.

擅自改变原文的主从部分不是典型的错误吗?

是我的理解有错还是主从的改变不一定错呢?

晕了

主从的改变不一定错

这个题目中其他选项都有错误

A.which 指代错误

C.现行结构逻辑错误

D.过去完成时不对

E.that错误地省略了

B挺好的。呵呵