Which one of the following, if substituted for the constraint that Wellspring and Zircon each perform in an earlier s...

Batman September 26, 2015

Help

I do understand why the correct answer goes to A, but I do not understand why the choice (C) wouldn't be the answer. Thanks,

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Naz September 29, 2015

The issue with answer choice (C) is that it allows for Z to be before or after Z, whereas before X was clearly only allowed before X.

Hope that helps clear things up! Please let us know if you have any other questions.

Batman September 30, 2015

Aha~ thanks a lot!!!^^