Movement of coelomic fluid helps in locomotion of

Which option shows the maximum number of correct characteristics for the given figure?

Closed circulatory system is found in?

In which of the following is the clitellum absent?

The first circulatory system is observed in the members of this phylum.

$A$: True coelom originated for the first time in phylum $Annelida$.
$R$: It allowed the animal to have an alimentary canal longer than the body and space for storing gametes.