In the $IUPAC$ nomenclature system,what is the correct decreasing order of priority for the following functional groups?

  • 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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