• A [[5, 4, 3, 2, 1], [7, 8, 9]]
  • B [[5, 4, 6, 2, 1], [7, 8, 9]]
  • C [5, 4, 6, 3, 2, 1]
  • D [5, 4, 6, 2, 1, 7, 8, 9]
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