Write the decreasing order of priority for functional groups in the $IUPAC$ nomenclature system.

  • A
    $-COOH, -SO_3H, -CONH_2, -CHO$
  • B
    $-SO_3H, -COOH, -CONH_2, -CHO$
  • C
    $-CHO, -COOH, -SO_3H, -CONH_2$
  • D
    $-CONH_2, -CHO, -SO_3H, -COOH$

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