$A$: All higher animals from $Annelida$ onwards possess an organized circulatory system.
$R$: Coelomate organization is observed from $Annelida$ onwards.

• A
  $A$ and $R$ are both true.
• B
  $A$ and $R$ are both false.
• C
  $A$ is true and $R$ is false.
• D
  $A$ is false and $R$ is true.