In which one of the following, the phylum name and its two characters are correctly matched?

	Phylum	Character 1	Character 2
1	Hemichordata	Indirect development	Open circulatory system
2	Echinodermata	Internal fertilisation	Water vascular system
3	Mollusca	Metamerism	Calcareous shell
4	Arthropoda	Enterocoelom	Chitinous Exoskeleton

• A

  1

• B

  2

   

• C

  3

• D

  4