The correct nomenclature for the following compound is:

  • A
    $2$-carboxy-$4$-hydroxyhept-$6$-enal
  • B
    $2$-carboxy-$4$-hydroxyhept-$7$-enal
  • C
    $2$-formyl-$4$-hydroxyhept-$7$-enoic acid
  • D
    $2$-formyl-$4$-hydroxyhept-$6$-enoic acid

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