What does a rapid palatal expander (RPE) accomplish in orthodontic treatment?
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A
It retracts the maxillary arch posteriorly to correct Class III relationships
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B
It holds the mandible in a forward protrusive position during growth
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C
It widens the maxillary arch by gradually separating the midpalatal suture
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D
It intrudes the maxillary molars to correct a deep overbite