GMAT Sentence Correction

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Source: PREP

Level: 3

By pressing a tiny amount of nitrogen between two diamonds to a pressure of 25 million pounds per square inch, scientists not only were able to transform the gas into a solid, but they also created a semiconductor similar to silicon.

  • A not only were able to transform the gas into a solid, but they also created
  • B not only were able to transform the gas into a solid but also creating
  • C were able not only to transform the gas into a solid but to create
  • D were able not only to transform the gas into a solid but also creating
  • E were not only able to transform the gas into a solid, but they were also able to create

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