Which of the following characteristic features holds true for all the animals of the corresponding group?

	Character	Phylum
1.	Hooks and Suckers	Platyhelminthes
2.	Metamerism	Echinodermata
3.	Jointed appendages	Annelida
4.	Mantle	Mollusca

• A

  1

• B

  2

• C

  3

• D

  4