GMAT Sentence Correction
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Source: OG
Level: 3
Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth.
- A has been dated to be 3.47 billion years old and thus is
- B has been dated at 3.47 billion years old and thus
- C have been dated to be 3.47 billion years old and thus are
- D have been dated as being 3.47 billion years old and thus
- E have been dated at 3.47 billion years old and thus are