14-year-old short stature boy who is fat with lower intelligence，retinitis pigmentosa and hexadactylism.He isn’t at puberty.The most likely diagnosisis

  • A: Pick Wickian syndrome
  • B: Laurence-Moon-Biedl syndrome
  • C: Froehlich syndrome
  • D: Prader-Willi syndrome
  • E: Alstrom syndrome

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