Which of the following statement(s) is/are correct?

(i) Animals in which the cells are arranged in two embryonic layers, an external ectoderm and an internal endoderm, are called diploblastic animals.

(ii) Notochord is an ectoderm ally derived rod like structure formed on the ventral side during embryonic development in some animals.

(iii) In some animals, the body cavity is not lined by mesoderm, instead, the mesoderm is present as scattered pouches in between the ectoderm and endoderm and such a body cavity is called pseudocoelom.