Read the following statements.

a) Devilfish and cuttle fish are the members of the largest phylum.

b) Tapeworms are flatworms.

c) Both catfish and dog fish have similar type of exoskeleton and endoskeleton as well.

d) Both sea walnuts and sea cucumbers exhibit radial symmetry

Choose the correct set of statements from the given options.

Animals belonging to phylum Platyhelminthes are commonly called as flatworms (dorso-ventrally flattened), tapeworms are included under phylum Platyhelminthes.

Sea walnuts belongs to phylum ctenophores, they exhibit radial symmetry.

Sea cucumbers belongs to phylum Echinodermata. Animals belonging to this phylum exhibit pentaradial symmetry secondrily (adult stage).