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As the etched lines on computer memory chips have become

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As the etched lines on computer memory chips have become [#permalink] New post 24 Sep 2010, 23:11
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Question Stats:

49% (02:38) correct 49% (01:13) wrong based on 2 sessions
As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased.
(A) the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have
(B) the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has
(C) the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has
(D) their circuits are more complex, the power of both the chips and the electronic devices they drive have
(E) their circuits more complex, both the power of the chips and the electronic devices they drive have

One question about the parallelism in this question as the follow:
"As the etched lines ..... have become thinner and the chips’ circuits more complex...".

The sentence does not sound parallel to me. Isn't it supposed to be like this:

"As the etched lines ..... have become thinner and the chips’ circuits have become more complex...".

Many thanks.

Note: for those who looking for other issues with this questions, please refer to this post: sc1000-139-chips-50342-20.html
[Reveal] Spoiler: OA
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Re: Etched lines [#permalink] New post 25 Sep 2010, 10:05
B it is.

As the etched lines have become thinner and the chips' circuits [have become] more complex, the power of both the X and the Y has greatly increased.

As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased.

(B) the chips’ circuits [have become] more complex, the power of both the chips and the electronic devices they drive has
Re: Etched lines   [#permalink] 25 Sep 2010, 10:05
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