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Which of the following statements accurately compares CT and PET scans?.
- A.CT scans provide functional information; PET scans provide structural information.
- B.Both CT and PET scans use X-rays to create images.
- C.CT scans are generally better for showing brain structure, while PET scans are better for showing brain activity.
- D.Neither CT nor PET scans involve exposure to any form of radiation.
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