Match the following columns:

$a$. Pennatula	$1$. Brain coral
$b$. Meandrina	$2$. Sea-fan
$c$. Gorgonia	$3$. Sea-pen
$d$. Adamsia	$4$. Sea-anemone

Select the correct sequence for $a, b, c, d$.

• A
  $3, 1, 2, 4$
• B
  $1, 3, 2, 4$
• C
  $2, 4, 1, 3$
• D
  $2, 3, 4, 1$