General Organic Chemistry

$[A]<[B]<[C]<[D]$

$[$ D $]<[$ C $]<[$ B $]<[$ A $]$

$[\mathrm{B}]<[\mathrm{C}]<[\mathrm{D}]<[\mathrm{A}]$

$[\mathrm{B}]<[\mathrm{C}]<[\mathrm{A}]<[\mathrm{D}]$