Match the following list of animals with their level of organisation and choose the correct sequence.

Column $I$	Column $II$
$A$. Organ level	$p$. Pheretima
$B$. Cellular aggregate level	$q$. Fasciola
$C$. Tissue level	$r$. Spongilla
$D$. Organ system level	$s$. Obelia

• A
  $A-s, B-r, C-p, D-q$
• B
  $A-s, B-q, C-r, D-p$
• C
  $A-q, B-s, C-r, D-p$
• D
  $A-q, B-r, C-s, D-p$